Size 18 Women's Swimwear

    207 products
    Navy and White Dots Long Frill V Neck One Piece
    New
    Big Bust

    Navy and White Dots Long Frill V Neck One Piece

    10 12 14 16 18 20 22
    Mono Paisley Chlorine Resistant Tank Tankini Top
    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

    10 12 14 16 18 20 22 24 26
    Caribbean Chlorine Resistant Short Sleeve Rash Vest
    New
    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

    10 12 14 16 18 20 22
    Florida High Waisted Pant
    New
    Tummy Control
    Brunette model wears flattering high rise blue floral swim bottom

    Florida High Waisted Pant

    10 12 14 16 18 20 22
    Large Polka Dot Tank Tankini Top
    New
    Blonde model wears plus size navy tankini top with large polkadots

    Large Polka Dot Tank Tankini Top

    10 12 14 16 18 20 22
    Black Mesh Insert Adjustable Side Underwire One Piece
    New
    model wearing black swimsuit with mesh bust detail leaning on boat

    Black Mesh Insert Adjustable Side Underwire One Piece

    10 12 14 16 18 20 22
    Large Polka Dot High Waisted Pant
    New
    Tummy Control
    Blonde model shows high waisted tummy control swim bottom in navy and large polkadots

    Large Polka Dot High Waisted Pant

    10 12 14 16 18 20 22
    Florida 3 Tier Tankini Top
    New
    Big Bust
    Brunette model wears tummy control tankini top with shelf bra in blue floral print

    Florida 3 Tier Tankini Top

    10 12 14 16 18 20 22 24 26
    Large Polka Dot Tank One Piece
    New
    Tummy Control
    Blonde woman wears navy one piece with large white polka dots

    Large Polka Dot Tank One Piece

    10 12 14 16 18 20 22
    Florida Frill Sleeve One Piece
    New
    Brunette model wearing blue floral frill sleeve one piece with quarter zip front

    Florida Frill Sleeve One Piece

    10 12 14 16 18 20 22
    Florida Twist Front Bandeau One Piece
    New
    Removable Straps
    Brunette model wears flattering bandeau one piece in blue floral print with removable straps

    Florida Twist Front Bandeau One Piece

    10 12 14 16 18 20 22 24
    Carnival Chlorine Resistant Tank Tankini Top
    New
    Chlorine Resistant
    Brunette model wears plus size chlorine resistant black floral tankini top by the pool

    Carnival Chlorine Resistant Tank Tankini Top

    10 12 14 16 18 20 22 24 26
    Carnival Chlorine Resistant Long Sleeve Zip Up One Piece
    New
    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

    10 12 14 16 18 20 22
    Florida 3 Tier One Piece
    New
    Brunette model wears flattering blue floral one piece with 3 tiers for tummy control

    Florida 3 Tier One Piece

    10 12 14 16 18 20 22
    Large Polka Dot Waist Tie One Piece
    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

    10 12 14 16 18 20 22
    Carnival Chlorine Resistant Tank One Piece
    New
    Chlorine Resistant
    Brunette model wears chlorine resistant scoop neck black floral one piece

    Carnival Chlorine Resistant Tank One Piece

    10 12 14 16 18 20 22
    Carnival Chlorine Resistant Wide Strap Swim Dress - NO PANT
    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

    14 16 18 20 22 24 26 28 30
    Florida Flouncy Bandeau Tankini Top
    New
    Removable Straps
    Brunette model wears flattering blue floral bandeau tankini with removable straps and shelf bra

    Florida Flouncy Bandeau Tankini Top

    12 14 16 18 20 22
    Carnival Chlorine Resistant Bandeau One Piece
    New
    Chlorine Resistant
    Brunette model wears chlorine resistant black floral one piece swimsuit with removable straps

    Carnival Chlorine Resistant Bandeau One Piece

    10 12 14 16 18 20 22
    Honey Comb Zanzibar Triangle Bikini Top
    New
    Woman in an olive green bikini standing on a beach with ocean waves in the background

    Honey Comb Zanzibar Triangle Bikini Top

    10 12 14 16 18 20 22 24 26
    Honey Comb Zanzibar High Rise Pant
    New
    Tummy Control
    Woman in a green bikini standing next to a horse on a beach

    Honey Comb Zanzibar High Rise Pant

    10 12 14 16 18 20 22 24 26
    Honey Comb Zanzibar Halter Ring One Piece
    New
    Big Bust
    Woman wearing an olive green swimsuit on a beach

    Honey Comb Zanzibar Halter Ring One Piece

    10 12 14 16 18 20 22 24 26
    Honey Comb Zanzibar Waist Tie One Piece
    New
    Tummy Control
    Woman wearing a green swimsuit on a beach

    Honey Comb Zanzibar Waist Tie One Piece

    10 12 14 16 18 20 22
    Bahamas Blue Tank One Piece
    New
    Tummy Control
    Woman wearing a flattering black one piece swimsuit with blue floral design

    Bahamas Blue Tank One Piece

    10 12 14 16 18 20 22
    Bahamas Blue Waist Tie One Piece
    New
    Tummy Control
    Brunette model wears v neck one piece with flattering cross over design

    Bahamas Blue Waist Tie One Piece

    10 12 14 16 18 20 22
    Carnival Chlorine Resistant Boyleg Tight Swim Shorts
    New
    Chlorine Resistant
    Brunette model wears high-waisted black floral chlorine resistant swim shorts

    Carnival Chlorine Resistant Boyleg Tight Swim Shorts

    10 12 14 16 18 20 22
    Carnival Chlorine Resistant Short Sleeve Rash Vest
    New
    Chlorine Resistant
    Brunette model wears short sleeve chlorine resistant rash vest with full front zip

    Carnival Chlorine Resistant Short Sleeve Rash Vest

    10 12 14 16 18 20 22
    Jantzen Hibiscus Long Sleeve Rash Vest
    New

    Jantzen Hibiscus Long Sleeve Rash Vest

    12 14 16 18 20 22
    Jantzen Hibiscus Gathered Surplice
    New

    Jantzen Hibiscus Gathered Surplice

    12 14 16 18 20 22 24
    Jantzen Geneva Bar Surplice 1Pc
    New

    Jantzen Geneva Bar Surplice 1Pc

    12 14 16 18 20
    Jantzen Geneva F/G One Piece
    New
    Big Bust
    Woman wearing a patterned swimsuit standing outdoors against a white wall.

    Jantzen Geneva F/G One Piece

    14 16 18 20
    Caribbean Chlorine Resistant Sleeveless Zip Up One Piece
    New
    Chlorine Resistant
    Brunette model wears chlorine resistant floral zip front one piece to the pool

    Caribbean Chlorine Resistant Sleeveless Zip Up One Piece

    10 12 14 16 18 20 22
    Caribbean Chlorine Resistant Tank Tankini Top
    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

    10 12 14 16 18 20 22 24 26
    Caribbean Chlorine Resistant 3 Tier Tankini Top
    New
    Chlorine Resistant
    Brunette model wears chlorine resistant pink and gold floral tankini top with ruffles

    Caribbean Chlorine Resistant 3 Tier Tankini Top

    10 12 14 16 18 20 22
    Caribbean Chlorine Resistant Tank One Piece
    New
    Chlorine Resistant
    Brunette model wears flattering chlorine resistant scoop neck one piece swimsuit

    Caribbean Chlorine Resistant Tank One Piece

    10 12 14 16 18 20 22
    Metallic Sangria Criss Cross One Piece
    New
    Tummy Control
    Woman in a deep red metallic swimsuit standing by a pool

    Metallic Sangria Criss Cross One Piece

    10 12 14 16 18 20 22
    Metallic Sangria Twist Front Bandeau One Piece
    New
    Removable Straps
    Woman in a metallic red swimsuit standing outdoors with greenery in the background

    Metallic Sangria Twist Front Bandeau One Piece

    10 12 14 16 18 20 22
    Sunseeker Navy 4 Way Stretch Board Short Bottom

    Sunseeker Navy 4 Way Stretch Board Short Bottom

    12 14 16 18 20
    Navy Chlorine Resistant Tank Tankini Top
    Best Seller
    Chlorine Resistant
    Woman wearing a blue tank tankini by a pool

    Navy Chlorine Resistant Tank Tankini Top

    12 14 16 18 20 22
    Luxe Sport Red Navy Chlorine Resistant Sleeveless Zip Up One Piece
    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

    10 12 14 16 18 20 22

    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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