Plus Size Swim & Beachwear

Women's Plus Size Swim & Beachwear

Browse Bonmarché’s range of plus size swimwear. Our plus size swim dresses, beach dresses and swimsuits come in a range of colours and styles that suit all shapes and sizes. Available up to size 28.
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91 products found
  • Relax by the pool in style with this statement swimsuit. The eye-catching monochrome design features an artistic pattern on the bust and a plain body for a bit of contrast. A knot tie at the chest and tummy control panels keep the silhouette nice and sleek. This piece also has adjustable straps, so you can get the fit and support that you need.
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  • Shine bright by the pool in this eye-catching swimsuit. The tropical floral pattern is accented by shimmering foil details that sparkle in the sunlight. As pretty as it is practical, the piece has a tummy control panel to offer support and keep your silhouette sleek. Gathered fabric adds to the figure-flattering look. Style with a black sarong and wedge sandals for the ideal holiday outfit.
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  • Poolside glamour has never been easier to achieve than with this floral swimdress. The seasonal print is livened up by touches of glittering foil, giving the piece a little sparkle when the sun is out. Its design is fitted with tummy control, which creates a flattering fit that is boosted by the flowy shape. Team with a sarong and sandals when heading from beach to bar.
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  • Slip on this swimdress and get ready to dip your toes in the surf. The front panel features nautical stripes against a navy background. It is shaped to create a slim silhouette while a sweetheart neckline and gentle gathers at the bust work together to flatter your figure. Beneath the skirt, a tummy control lining is on hand to give confidence-boosting support. Just add a wide-brimmed hat and relaxed linen shirt to capture classic seaside elegance.
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  • Bring plenty of pattern to your beach outfit with this multiway swimdress. The all-over navy and white tribal print is both lively and versatile: pair yours with a plain sarong and sandals when you are wandering down to the pool. It also has a tummy control lining down the front to help you feel confident. Wear the straps for extra support or take them off to create a bandeau-style look (just the thing to keep tan lines at bay).
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  • £22.00
    £11.00
    Made from breathable pure cotton, this versatile navy beach shirt is perfect for slipping on top of your swimsuit. Super lightweight and with a relaxed fit, it has an unfussy buttoned front closure and comfortable V neck. Stylish detail comes from the criss-cross lacing that runs from the shoulders down the sleeves. Long enough to wear on its own as you make your way to the pool, it can also be casually draped over loose linen trousers.
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  • With its vibrant colour and stylish snake-print pattern, this sundress is a true style steal. It has a frilly hem that adds a playful finish to the sleek silhouette. Wear it by night with a pair of heels and a short cardigan or during the day with sandals and a floppy sun hat.
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  • Pop this snake-print swimdress in your suitcase and make waves on your next holiday. It has a flattering, floaty shape and is fitted with a tummy control lining to help you look your absolute best poolside. A tab detail separates the cups, giving a little structure to the piece. Slip on with your favourite sunnies and you are good to go.
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  • Nothing quite says vintage seaside charm like a bold polka-dot swimsuit. This design has a hidden tummy control panel to smooth your figure and flattering ruching down the front. A twisted panel across the chest creates an easy sweetheart shape that frames your curves. Just add large sunglasses and wedge heels to complete the look.
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  • With its bold snakeskin-inspired design, this floaty dress is sure to become a holiday favourite. Each chevron stripe has a slightly different print in cool blue, black and white tones. The piece features a hanky hem that elegantly swishes around your legs and the straps are adjustable, so you can find the perfect fit. Wear it with heels and statement earrings for an evening out.
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  • Whether you are working on your backstroke or topping up your tan, these swim shorts are a true summer essential. They come in a comfortable and stretchy swim fabric and provide plenty of coverage over your stomach and back. Subtle ruching down the sides helps to flatter your figure: perfect for boosting your beach confidence. In a versatile block hue, they are easy to match with plain or patterned swim tops.
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  • £20.00
    £10.00
    Popping to the beach? Slip on this patterned kaftan. Made from lightweight chiffon, it is fabulously floaty and helps to keep you cool under the sun. The piece is undeniably playful with its vibrant zebra print and sleeves lined with tassels. Layer it over a black swimsuit or bikini to really make the colours pop. Both the V neck and waist tie are there to flatter your figure: simply knot the belt to lightly cinch your silhouette.
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  • Set sail for stylish shores in this bandeau swimsuit, featuring a jacquard striped design to lend a timeless nautical vibe to your holiday wardrobe. This piece is cut high on the leg, and features tummy control technology to flatter your figure. It also has detachable straps for a little extra support. Team with sunglasses and a straw hat for a classic poolside look.
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  • High waist brief in a classic nautical navy and white stripe print. Featuring a flattering ruched side panel and front seams along with full front and back lining ensuring a modest, comfortable and stylish fit.
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  • Specifically designed to flatter the figure, these bikini briefs make beach days all the more enjoyable. They have a high-waisted cut and a panelled ruffle detailing at the middle to smooth your shape. The bold florals feel fresh and fun, and they are brought to life by the glamorous colour combination. Team with the matching bikini top to pull together the perfect holiday look.
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  • £12.00
    £8.00
    Take a trip to the great British seaside in these vintage-inspired bikini briefs, which are available exclusively online. The gingham print harks back to the 1950s, as does the flattering high-waisted shape. If the pretty ruching on the front was not enough, this design has a hidden tummy control panel. Match these with a gingham bikini top, or mix things up with a block-colour style.
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  • £25.00
    £17.00
    Earning its place as a suitcase essential, this web exclusive spotted jumpsuit can be worn two ways. Remove the straps for a bandeau shape that is great for avoiding tan lines. Want extra support? The straps can be added and adjusted for the perfect fit. In a cool, wide-leg cut, it makes hot-weather dressing a breeze, while the elasticated waistband brings definition to your silhouette.
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  • Ideal for warm days in the garden and meals by the sea, this bright sundress is the perfect addition to any summer wardrobe. It has a pretty floral pattern featuring tropical blooms on a vibrant backdrop. The frilly hem adds a final touch of elegance to the easy-going shape, ideal for evenings spent enjoying live music.
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  • With its floral design, this bikini top will blend right in with your beachwear favourites. The foil detail gives it a glamorous edge, especially when it catches the sunlight, and the knot detail feels fun and feminine. Fitted cups and adjustable straps are a practical addition to the piece, making sure the shape is just right.
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  • Heading on a beach holiday? Make sure to pack this versatile swimsuit. The all-over snake print is effortlessly glamorous and comes in a range of cool blue hues, just what a poolside outfit needs. For a stroll to the bar, layer yours with a plain sarong and add a wide-brimmed hat. Thanks to smoothing tummy control lining, you can feel confident while you lounge in the sun. Keep the straps in place for extra support or remove them to create a bandeau-style piece.
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  • £12.00
    £8.00
    Why settle for one shade when you could have many? The choice is easy with this web exclusive sarong. It is decorated all over with a bright multicoloured print which combines chevron and horizontal stripes for a modern look. It is an essential lightweight layer for beach days, and barely takes up space in your luggage. Knot it around your waist or throw it over your shoulders for extra coverage.
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  • Offer - 20% Off
    £25.00
    £20.00
    Lightweight and versatile, this Isla & Rose playsuit will be top of your holiday packing list. A loose fit means you stay cool, while a hint of stretch in the fabric makes it extra comfortable. Tassels on the hem and an eye-catching monochrome tie-dye print lend a touch of bohemian style to the look. Wear it casually with sandals and statement sunglasses at the beach or dress it up with bold jewellery for dinner.
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  • With its subtle texture and a big bold pop of contrast colour, this bikini top brings fun and glamour to relaxing beach days. The halter neck shape is flattering on the figure and can be adjusted to give you the right level of support as well as the perfect fit. Team with the matching briefs or mix with a printed pair for a unique combination.
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  • Make a statement in the swimming pool with these eye-catching bikini briefs made from a subtly textured fabric. They are accented with colour-block details at the sides for a look that instantly flatters the figure. Thanks to the high waist and built-in tummy control, they will keep your silhouette streamlined and ready for those holiday snaps.
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  • There are three ways to wear this holiday-ready skirt dress. Firstly, pop on the straps and it is a floaty sundress. Alternatively, go bandeau style and remove the straps for a tan-line-free look. It even works as a maxi skirt: simply pull the stretchy ruched panel down to your waist and add a floaty blouse for a boho-inspired outfit. In a blue and white tribal print, this design is versatile yet lively.
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  • Flattering and feminine, this swimsuit is a suitcase staple. It has a bandeau neckline with a frill detail that gives it a retro feel. The tummy control smooths your shape and the adjustable shoulder straps make sure you are always comfortable dipping in and out of the pool. Indulge in old Hollywood glamour by matching with a pair of dark sunglasses.
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  • Go bold with your holiday swimwear and slip on these printed bikini bottoms. They have an intricate all-over snake print in cool blue and white hues that perfectly match the ocean waves. In a high-waisted cut, they give you plenty of coverage and even have a tummy control lining to help smooth your silhouette. A ruched panel at the front offers a confidence boost, too. Add the coordinating bikini top for an easy poolside look.
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  • £14.00
    £7.00
    Add a feminine frill to your beach-ready outfit with these glamorous bikini briefs. They have a wide waistband with dainty shirred ruffles along the top and bottom that are subtle yet playful. They also provide a little extra coverage over your hips. To complete your look, wear yours with the matching bikini top, wedge sandals and a patterned sarong.
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  • £12.00
    £7.00
    Match the lapping waves as you relax on the shore in this cool blue sarong, which is exclusive to the website. Three shades blend together in an ombre print which has a watercolour effect, making it a fabulous beach accessory. Tie it around your waist to cover up as you go from lounger to bar and back again. Made from a lightweight fabric, it can also be worn over your shoulders for a little protection from the sun when you need it.
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  • Cannot decide on your favourite shade? Wear them all with this lightweight sundress. It features an all-over rainbow print in a flattering chevron stripe, with muted navy piping along the neckline and straps. This cool piece is perfect for hot days: throw yours on over your swimsuit when you are heading to the beach, or wear it with wedges for a weekend lunch. Ruching down the front gives it a relaxed and floaty shape that skims easily over your figure.
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  • A stylish swim skirt in a classic nautical navy and white stripe print. Featuring an elasticated waist, an inner swim brief and front lining ensures modesty as well as comfort and style.
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  • Make your next holiday even more exciting with this vibrant foil detail tankini. The chest area features a bold floral print and contrasts against the plain middle section. Complete with tummy control, this piece is designed to help flatter your figure. A knot adds a little extra detail, while the adjustable shoulder straps make sure the item fits perfectly.
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  • Get your holiday style sorted with this charming swimdress, in a vibrant spotted print. It is designed in a super flattering wrap style with a tie at the side to cinch in your waist. With its flippy skirt and wide straps, the piece gives full coverage whether you are at the pool or beach. It is made from a stretchy material with concealed tummy control panels for an added confidence boost.
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  • Offer - 20% Off
    £20.00
    £16.00
    This Isla & Rose camisole is a summer wardrobe must-have. Crafted from a floaty fabric and featuring sleek adjustable straps, it is a cool and breezy piece: perfect for wearing with shorts on hot days or layering under a beach shirt. A delicate lace trim around the V neck and subtle hanky hem add those final feminine touches.
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  • £12.00
    £9.00
    Packed full of clever details, these web exclusive spotty bikini briefs are here to boost your poolside confidence. First up, they have a tummy control lining which helps to smooth your stomach. Then a flattering ruched panel skims over your figure, hiding any problem areas. In a high-waisted cut, they give you plenty of coverage while also lending your look a distinctly retro feel. To complete the set, pair yours with the coordinating dot print bikini top.
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  • Embrace a festival feeling in a subtle way for summer with this Isla & Rose camisole, available exclusively online. The lightweight material, loose cut and eye-catching tassel hem make this a fun piece, while the simple spaghetti straps and block-colour design pares down the look. Made from a high-quality, soft-touch fabric with just a little stretch, this is a comfortable option for warmer days.
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  • Offer - 20% Off
    £25.00
    £20.00
    To create a breezy boho outfit this summer, just pop on this tiered skirt from the Isla & Rose collection. It has intricate lace panels running through the middle and a tasseled drawstring on the front that you can tighten and tie into a feminine bow. It is made to be comfortable too, from the snug elasticated waistband down to the swishy mid-length hem. Just add a tucked-in T-shirt and sandals for a perfect weekend-ready look.
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  • Offer - 20% Off
    £30.00
    £24.00
    When warm weather calls for breezy dressing, turn to this super lightweight Isla & Rose maxi dress. It has a loose and flowing shape that skims over your figure and gives you plenty of room to move at the beach or around the pool. It is also made from a smooth viscose fabric that is naturally stretchy. The all-over tie-dye pattern toes the line between smart and casual: just add a floppy hat and sandals for an easy boho outfit. Perfect lightweight beach cover dress to take on your holidays.
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  • If you are taking a trip to the tropics, add this bikini top to your suitcase. It has a classic all-over snake print with a modern twist: a fresh blue hue that will perfectly match the glittering pool or ocean. It comes with detachable straps, so you can wear it halterneck style for added support. To avoid tan lines, take the straps off and wear it as a bandeau piece. Complete your holiday look with the matching bikini bottoms.
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  • Make a splash in this tankini swimsuit, featuring a fresh floral lily print with a striking contrast to catch the eye. Its sleek lines skim the figure, while tummy control panels mean a flattering finish so you can enjoy the beach in confidence. This easy-wearing design is cut with a classic bandeau neckline and finished with adjustable straps for extra support.
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  • Mix & Match Tankini top in a classic nautical navy and white stripe print featuring a bow tie detail to the centre front and rouched tie side detail for a flattering shape. Over the shoulder straps, soft cups, full lining with bust support ensure extra comfort.
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  • Mix & Match Tankini top in a classic nautical navy and white stripe print with a feminine loose frill detail to the neckline. Halterneck straps, soft fixed cups and full lining to ensure extra comfort. Designed to be worn with our other mix and match styles in this range.
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  • £18.00
    £9.00
    Embrace a festival feeling in a subtle way for summer with this Isla & Rose camisole, available exclusively online. The lightweight material, loose cut and eye-catching tassel hem make this a fun piece, while the simple spaghetti straps and block-colour design pares down the look. Made from a high-quality, soft-touch fabric with just a little stretch, this is a comfortable option for warmer days.
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  • Eye-catching super sleek lace up swimsuit. With flattering and supportive over the shoulder straps and plunge neckline this swimsuit has been designed to not only be fashionable but comfortable too. The lace up detail and contrast neon trims gives this classic swimsuit a contemporary twist.
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  • This bikini top is designed with lightly padded cups to give a gentle uplift and an overall smooth silhouette. The twist front detail adds a feminine touch and the contrast neon trims compliment the stylish leopard print, whilst the over the shoulder adjustable straps ensure a perfect fit.
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  • Offer - 20% Off
    £28.00
    £22.40
    Nothing quite says casual poolside style like this Isla & Rose kaftan. It is made from a lightweight and floaty fabric that has a hint of comfortable stretch and the loose fit skims over your figure. To flatter your shape, it has an elasticated and ruched waistband as well as wide flowing sleeves. Of course, it is all about those classic boho-style details, such as the tie-dye pattern in versatile monochromes and the tassel tie on the notched neckline.
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  • Offer - 20% Off
    £30.00
    £24.00
    In a bright shade and with a bold zebra print, this lightweight jumpsuit by Isla & Rose captures two trends at once. Cut to flatter, it has a laid-back sleeveless shape and a hint of comfortable stretch in its airy fabric. Choose to define your figure by cinching in the tasselled drawstring at the elasticated waist or leave it loose and relaxed. The crossover front has a deep V neck and is fastened with poppers.
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  • Offer - 20% Off
    £28.00
    £22.40
    Looking for a flowing maxi dress that is endlessly versatile? Try this Isla & Rose design in an on-trend colour. Made from a lightweight and stretchy viscose, it is supremely comfy and skims over your figure for a flattering fit. At the neckline, a deep V on the front and back give it a retro-inspired shape (and perfectly frame your jewellery). Simply change your sandals to heels to take this one from daytime to evening events.
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