Size 18 Women's Swimwear

  • In stock
$0.00 $169.95
209 products
  • In stock
$0.00 $169.95
Best Seller
Chlorine Resistant
model wearing navy polka dot swimsuit at pool

Chlorine Resistant Navy & White Dots V Neck Underwire One Piece

    $149.95
Long Torso
Black curvy tie front one piece with sleeve and stomach ruching

Black Short Sleeve Tie Front One Piece

    Sale price $54.95 Regular price $109.95
Sale

Leopard Sustainable Frill Sleeve One Piece

    Sale price $69.95 Regular price $139.95
Best Seller
Tummy Control
Woman in a blue polka dot swimsuit standing on a boat with water and sky in the background

Navy & White Dots Frill Sleeve One Piece

    $129.95
Best Seller
Big Bust
size 16 women standing wearing supportive underwire tankini top in textured black and white fabric

Acapulco Underwire Tankini Top

    $134.95
Sale
Tummy Control
model wearing black floral high waisted swim pant with matching off the shoulder bikini top

Frenchy Black High Waist Bikini Bottoms

    Sale price $29.95 Regular price $59.95
Best Seller
Big Bust
model on beach wearing black textured ruched swimsuit

Honey Comb Black Ruched Underwire One Piece

    $139.95
Best Seller
Tummy Control
model wearing navy polka dot wrap top and skirted bottom

Navy & White Dots Ruched Skirted Bikini Bottoms

    $79.95
Best Seller
Big Bust

Navy & White Dots Crop Wrap Bikini Top

    $89.95
Best Seller
Tummy Control
blonde model wearing black and white cap sleeved one piece standing in front of a pool

Acapulco Black and White Cap Sleeve One Piece

    $149.95
Best Seller
Big Bust
Blonde model by pool wearing a black tankini top with ruffle detail

Black 3 Tier Tankini Top

    $99.95
Sale
model wearing leopard print long sleeve one piece with front zip

Leopard Sustainable Long Sleeve One Piece

    Sale price $69.95 Regular price $139.95
black high waisted swim skirt

Black Skater Swim Skirt

    $69.95
Best Seller
Long Torso
Woman in a polka dot swimsuit standing on a boat with blue water and sky in the background

Navy & White Dots Vintage Skirted One Piece

    $129.95
Brunette model wears plain black long sleeve rash vest with full zip front

Plain Black Long Sleeve Rash Vest

    $109.95
Sale
Leopard High Neck Mastectomy One Piece

Leopard Sustainable Sleeveless Zip Front One Piece

    Sale price $64.95 Regular price $129.95
Best Seller
Tummy Control
Blonde woman by pool wearing high waisted pant bottom for curve women

Plain Black High Waist Bikini Bottoms

    $59.95
Big Bust
blonde size 18 women is wearing a short sleeve black rashvest with a functional front zip

Plain Black Short Sleeve Rash Vest

    $99.95
Best Seller
Big Bust
Honey Comb | Plus Size Tankini Swimsuit

Honey Comb Black Underwire Tankini Top

    $129.95
Best Seller
Big Bust
Blonde model wearing black with white accent swimsuit on boat

Acapulco Black and White V Neck Underwire One Piece

    $149.95
Underwire
model wearing plain black ladies one piece

Black Scooped Underwire One Piece

    Sale price $54.95 Regular price $109.95
Chlorine Resistant
model wearing a navy blue high waisted swimming pant made in chlorine resistant fabric

Chlorine Resistant Navy High Waist Bikini Bottoms

    $64.95
Tummy Control
brunette model wearing navy high waisted swim bottoms with matching dotty tankini

Navy High Waist Bikini Bottoms

    $59.95
Woman in a navy polka dot swimsuit standing on a sailboat with water and sky in the background

Navy & White Dots Boyleg One Piece With Bow

    $119.95
Sale
model wearing navy polka dot tie side bottoms with matching top and hat

Navy & White Dots Tie Side Bikini Bottoms

    $44.95
Sale
Retro Check Tie Side Swim Pant Bottom

Retro Check Tie Side Bikini Bottoms

    Sale price $10.00 Regular price $44.00
Sale
blonde plus size women wearing pink frill bikini pant with a square neckline bikini top

Amalfi Pink Frill Bikini Bottoms

    Sale price $34.95 Regular price $69.95
Sale
retro floral tied swim bottom

Retro Floral Tie Side Bikini Bottoms

    Sale price $10.00 Regular price $49.95
Sale
brunette model in front of a pool wearing aqua blue print mid rise pant bottom

Whitehaven Side Ruched Mid Bikini Bottoms

    Sale price $20.00 Regular price $69.95
Best Seller
model standing in front of a pool wearing a black above knee boardshort with tie front detail

Plain Black Luxe Sport Stretch Board Shorts

    $79.95
Sale
Chlorine Resistant
Curve woman wearing high waisted blue and white dot swimwear pant in chlorine resistant

Vintage Dots Chlorine Resistant High Waisted Pant

    Sale price $34.95 Regular price $69.95
Sale
Chlorine Resistant
Blonde model wearing baby blue spotty one piece

Vintage Dots Chlorine Resistant Tank One Piece

    Sale price $74.95 Regular price $149.95
Sale
Tummy Control
Blonde model wearing light pink high waisted swim pants on beach

Maldives High Waisted Pant

    Sale price $29.95 Regular price $59.95
brunette model wearing a retro styled black crop bikini top with mesh polkadots on the sleeves

Mesh Polkadot Short Sleeve Crop Top

    Sale price $44.95 Regular price $89.95
Sale
Removable Straps
Blonde model wearing light pink floral bikini on beach

Maldives Underwire Bandeau Bikini Top

    Sale price $44.95 Regular price $89.95
Best Seller
Big Bust
model wearing navy polka dot short sleeve rash vest

Navy & White Dots Short Sleeve Rash Vest

    $109.95
Best Seller
Removable Straps
ghost mannequin of navy and white polkadot twist front strapless bandeau one piece swimsuit

Navy & White Dots Twist Front Bandeau One Piece

    $119.95
Black 3 Tier One Piece Swimwear

Black 3 Tier One Piece

    $134.95
Sale
Removable Straps
Brunette plus size model on beach wearing a flattering bandeau one piece with removable straps in bright colours

Summer Fields Twist Front Bandeau One Piece

    Sale price $64.95 Regular price $129.95
Sale
Big Bust
blonde model wearing bright floral underwire one piece

Summer Fields Ruched Underwire One Piece

    Sale price $69.95 Regular price $149.95

Size 18 Swimwear

Size 18 is one of our most popular sizes here at Curvy Swimwear. With this in mind we have created a collection of swimwear in size 18 to suit every shape and satisfy every need. Our size 18 collection includes everything you could possibly want in your swim wardrobe from bikini separates to one pieces, rashies and swim dresses. Browse our range and discover your new favourite swimsuit from one of our fabulous Australian brands. 

Shop by cup size or style, colour or price, and narrow your selection down to the perfect swimsuit for you. If you need help choosing, we are available via our online chat or email to answer any questions you have about style, size, or suitability. Our goal is to make your online shopping a breeze and for you to find a swimsuit that gives you all the confidence you need to hit the beach this summer. 

Size 18 One Piece Swimwear

Here at Curvy Swimwear, one piece swimsuits are our specialty. We have chosen the best one piece swimsuits from our favourite Australian brands to give you the best options in size 18 swimwear. 

You'll find fabulous one piece swimsuits in size 18 to suit your shape as well as your needs. Don't want strap marks? Our bandeau one pieces will ensure a tanline free summer. Need extra bust support? An underwire one piece might be just what you need. Spending long hours in the pool? A chlorine resistant one piece with sleeves will give you lasting protection. Whatever you need, you'll find it in our size 18 one piece swimsuit collection. 

Size 18 Swimwear Australia 

Shop easily online for size 18 swimwear in Australia and internationally. Curvy Swimwear offers excellent customer service, fast delivery, and the best range of plus size swimwear in Australia and New Zealand. 

Based on the beautiful Gold Coast, we know a thing or two about swimwear and ensure your time online with us is easy to navigate and a pleasurable experience. 



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