Size 18 Women's Swimwear

  • In stock
207 products
New
Big Bust

Navy and White Dots Long Frill V Neck One Piece

    $154.95
New
Chlorine Resistant
Brunette model standing by pool wearing a chlorine resistant tank tankini top with thick adjustable straps

Mono Paisley Chlorine Resistant Tank Tankini Top

    $129.95
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Chlorine Resistant
Brunette model wears stunning pink and gold floral short sleeve rash vest in chlorine resistant fabric

Caribbean Chlorine Resistant Short Sleeve Rash Vest

    $134.95
New
Tummy Control
Brunette model wears flattering high rise blue floral swim bottom

Florida High Waisted Pant

    $59.95
New
Blonde model wears plus size navy tankini top with large polkadots

Large Polka Dot Tank Tankini Top

    $109.95
New
model wearing black swimsuit with mesh bust detail leaning on boat

Black Mesh Insert Adjustable Side Underwire One Piece

    $119.95
New
Tummy Control
Blonde model shows high waisted tummy control swim bottom in navy and large polkadots

Large Polka Dot High Waisted Pant

    $59.95
New
Big Bust
Brunette model wears tummy control tankini top with shelf bra in blue floral print

Florida 3 Tier Tankini Top

    $129.95
New
Tummy Control
Blonde woman wears navy one piece with large white polka dots

Large Polka Dot Tank One Piece

    $129.95
New
Brunette model wearing blue floral frill sleeve one piece with quarter zip front

Florida Frill Sleeve One Piece

    $134.95
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Removable Straps
Brunette model wears flattering bandeau one piece in blue floral print with removable straps

Florida Twist Front Bandeau One Piece

    $129.95
New
Chlorine Resistant
Brunette model wears plus size chlorine resistant black floral tankini top by the pool

Carnival Chlorine Resistant Tank Tankini Top

    $129.95
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Chlorine Resistant
Brunette model wears zip front chlorine resistant black floral one piece with long sleeves

Carnival Chlorine Resistant Long Sleeve Zip Up One Piece

    $149.95
New
Brunette model wears flattering blue floral one piece with 3 tiers for tummy control

Florida 3 Tier One Piece

    $144.95
New
Tummy Control
Blonde woman wears supportive v neck one piece in navy and white large polka dot pattern

Large Polka Dot Waist Tie One Piece

    $139.95
New
Chlorine Resistant
Brunette model wears chlorine resistant scoop neck black floral one piece

Carnival Chlorine Resistant Tank One Piece

    $149.95
New
Chlorine Resistant
Brunette model wears chlorine resistant swim dress with wide straps black floral print

Carnival Chlorine Resistant Wide Strap Swim Dress - NO PANT

    $149.95
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Removable Straps
Brunette model wears flattering blue floral bandeau tankini with removable straps and shelf bra

Florida Flouncy Bandeau Tankini Top

    $119.95
New
Chlorine Resistant
Brunette model wears chlorine resistant black floral one piece swimsuit with removable straps

Carnival Chlorine Resistant Bandeau One Piece

    $149.95
New
Woman in an olive green bikini standing on a beach with ocean waves in the background

Honey Comb Zanzibar Triangle Bikini Top

    $69.95
New
Tummy Control
Woman in a green bikini standing next to a horse on a beach

Honey Comb Zanzibar High Rise Pant

    $59.95
New
Big Bust
Woman wearing an olive green swimsuit on a beach

Honey Comb Zanzibar Halter Ring One Piece

    $139.95
New
Tummy Control
Woman wearing a green swimsuit on a beach

Honey Comb Zanzibar Waist Tie One Piece

    $139.95
New
Tummy Control
Woman wearing a flattering black one piece swimsuit with blue floral design

Bahamas Blue Tank One Piece

    $129.95
New
Tummy Control
Brunette model wears v neck one piece with flattering cross over design

Bahamas Blue Waist Tie One Piece

    $144.95
New
Chlorine Resistant
Brunette model wears high-waisted black floral chlorine resistant swim shorts

Carnival Chlorine Resistant Boyleg Tight Swim Shorts

    $119.95
New
Chlorine Resistant
Brunette model wears short sleeve chlorine resistant rash vest with full front zip

Carnival Chlorine Resistant Short Sleeve Rash Vest

    $134.95
New

Jantzen Hibiscus Long Sleeve Rash Vest

    $129.95
New

Jantzen Hibiscus Gathered Surplice

    $159.95
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Jantzen Geneva Bar Surplice 1Pc

    $169.95
New
Big Bust
Woman wearing a patterned swimsuit standing outdoors against a white wall.

Jantzen Geneva F/G One Piece

    $169.95
New
Chlorine Resistant
Brunette model wears chlorine resistant floral zip front one piece to the pool

Caribbean Chlorine Resistant Sleeveless Zip Up One Piece

    $149.95
New
Chlorine Resistant
Brunette model poses by the pool in a stunning pink and gold floral chlorine resistant tankini

Caribbean Chlorine Resistant Tank Tankini Top

    $129.95
New
Chlorine Resistant
Brunette model wears chlorine resistant pink and gold floral tankini top with ruffles

Caribbean Chlorine Resistant 3 Tier Tankini Top

    $149.95
New
Chlorine Resistant
Brunette model wears flattering chlorine resistant scoop neck one piece swimsuit

Caribbean Chlorine Resistant Tank One Piece

    $149.95
New
Tummy Control
Woman in a deep red metallic swimsuit standing by a pool

Metallic Sangria Criss Cross One Piece

    $119.95
New
Removable Straps
Woman in a metallic red swimsuit standing outdoors with greenery in the background

Metallic Sangria Twist Front Bandeau One Piece

    $119.95

Sunseeker Navy 4 Way Stretch Board Short Bottom

    $69.95
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Best Seller
Chlorine Resistant
Woman wearing a blue tank tankini by a pool

Navy Chlorine Resistant Tank Tankini Top

    $109.95
New
Chlorine Resistant
Woman wearing a navy blue and red swimsuit by a pool

Luxe Sport Red Navy Chlorine Resistant Sleeveless Zip Up One Piece

    $139.95

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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