Underwire One Piece Swimwear

  • In stock
9 products
Brunette plus size model wearing black floral underwire swimsuit

Waikiki Underwire One Piece

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Bora Bora Underwire One Piece

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Chlorine Resistant Navy & White Dots Underwire One Piece

Capriosca Swimwear
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black plus size underwire one piece

Black Scooped Underwire One Piece

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Curvy brunette model wearing an ruched underwire one piece in bright coloured floral print

Summer Fields Underwire One Piece

Capriosca Swimwear
Blonde model wearing blush pink strapless one piece swimsuit

Seychelles Underwire Bandeau One Piece

Capriosca Swimwear


If you’re looking for added bust support in your swimwear, we design a huge range of plus swimsuits with underwire bra inserts. We offer supportive swimsuits for big busts with underwire as well as padded plus size swimwear for women wanting to create a smooth, natural shape.

Our sizing starts from a D cup and fits up to a G cup, from size 10 to 22. If you're looking for full figure swimwear with underwire, Curvy Swimwear has just what you're after. For smaller or larger busts, look for our shelf bra options to find your perfect fit. 

G Cup Underwire Swimwear

Unlike many other swimwear brands, we don’t just stop at D cup swimsuits with underwire. Our styles fit up to a G cup, and include bikinis, tankinis, one pieces and swim dresses. Our size range covers from 10 to 26 in most of our collections, so you’re sure to find something to fit you perfectly. With so many options available to you, the hardest part is making a choice.

Underwire One Piece Swimwear FAQs

Q: Which one piece swimsuits offer the most bust support?

A: Depending on your shape and size, generally an underwire one piece swimsuit offers the most bust support. Designed to fit specific bust sizes, DD/E or F/G cups, an underwire one piece works with adjustable straps to support you like a bra. 

Q: Where can I find a one piece swimsuit to fit a 22G?

A: At Curvy Swimwear we stock a range of G cup swimwear including one piece swimsuits to fit and support up to a 22G. Shop your size the same as you would when choosing your bra for the ultimate fit and support. 

Q: Is it possible to buy a strapless one piece swimsuit with and underwire?

A: Yes, it is. The Sardinia bandeau one piece by Capriosca Swimwear is a stunning new design with a DD/E underwire cup fitting to support your bust. You can add straps when you need to feel a little more secure, like when you're in the surf. 

Q: Are there underwire one piece swimsuits that can be worn in the pool?

A: Absolutely. Our underwire one piece collection includes chlorine resistant styles in a classic one piece design with adjustable straps. Made from 100% polyester, this chlorine resistant swimsuit will keep you supported while swimming laps or doing aqua aerobics. 

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