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  • A woman modeling a black two-piece bikini set against a textured beige studio background.
  • A woman is shown from behind wearing a black two-piece bikini, standing against a textured beige studio backdrop.
  • A woman modeling a solid black two-piece bikini set against a textured beige studio backdrop.
  • A woman modeling a black square-neck bralette against a warm beige textured background.
  • A woman modeling a black two-piece bikini against a textured beige studio backdrop, holding a matching black fabric accessory in one hand.
  • A plus-size model wearing a solid black two-piece bikini swimsuit with a square-neck top and high-waisted bottoms, styled with black sunglasses and black sandals, standing against a textured beige studio backdrop.
  • A woman shown from behind wearing a black two-piece bikini set against a textured beige studio background.
  • Rear view of a 2X model wearing a black two-piece swimsuit with adjustable back straps and gold-tone hardware, set against a neutral beige background.
  • A woman modeling a black two-piece bikini on a boat in a marina setting with water and sailboats in the background.
  • A woman modeling a black two-piece bikini on a sailboat in a marina with boats and water in the background.
  • A black underwire bra shown on a beige background with callout labels describing features such as adjustable straps, hidden underwire, supportive side panels, breathable power mesh, and underbust adjustability. Large text at the top reads 'Secretly Supportive'.
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Square Neck Bikini Top

$139
$139
Why It's Worth It
Shipping calculated at checkout.

or 4 X $34.75 with

Fuller-bust bikini top with hidden underwire, built-in bra support and adjustable lift for D-F cups.

Bust Support:

Bust Support: Excellent

Colour: Black
Size US 6 / AU 10 / EU 38
XS US 4 / AU 8 / EU 36
S US 6 / AU 10 / EU 38
M US 8 / AU 12 / EU 40
L US 10 / AU 14 / EU 42
XL US 12 / AU 16 / EU 44
2X US 14 / AU 18 / EU 46
3X US 16 / AU 20/ EU 48

Size Guide

Free shipping over $200 | Estimated delivery: Oct 29 – Nov 3

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Fit

Snug True to size Relaxed

Details

Finally, a bikini top for bigger boobs that doesn’t look like it was designed as an afterthought. The clean square neckline keeps it sleek and feminine, while a hidden underwire and built-in inner bra give you proper lift, separation and support without padding or bulk. Adjustable bust straps let you control the lift, while the 6-channel underbust slider lets you fine-tune the fit until everything feels exactly where it should. 

Big boobs shouldn't mean boring swimwear. This is support where it matters and sexy where it counts.

• SUPPORT - hidden underwire and built-in inner bra for lift, support and separation without padding
• BUST FIT - designed specifically for fuller busts, fitting D-F cups
• NECKLINE - clean square neckline with side bust coverage to keep everything contained
• ADJUSTABILITY - adjustable bust straps plus a 6-channel underbust slider for a custom fit
• FABRIC - chlorine-resistant Luxe Crinkle with a textured, elevated finish
• HARDWARE - brushed gold Fearless hardware
• SIZE RANGE - XS-3X (Australian sizes 8-20)

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Fabric & Care

This swimsuit is crafted from our high quality LuxeCrinkle fabric - made using recycled plastic bottles and pre consumer waste. Soft, supportive and planet friendly.

Outer: 84% recycled polyamide, 16% spandex
Lining: 75% recycled nylon, 25% spandex
Power mesh: 85% polyamide, 15% spandex

Sustainability isn’t just about recycled materials - it’s about choosing well made pieces that last season after season. With the right care, your Fearless swimwear will keep looking incredible for years.

Care Tips:
  • Rinse in fresh water after every wear, especially after pools or spas
  • Cold hand wash or gentle cold cycle, separately, to prevent colour transfer
  • Avoid tumble drying, bleaching, soaking or ironing
  • Dry in the shade

Then go have a nap - because laundry is the worst.

Country of Origin: China

What’s My Size

We recommend checking your measurements against our size & fit guide before ordering. Good news is we do offer exchanges and refunds if the size isn’t spot on.

That said, it's a compressive swimsuit, designed to help you feel held and supported (like wearing your favourite activewear)!

ABOUT OUR MODELS:

Lyndi wears Size Small/AU 10/US 6
Height: 165cm (5’5”)
Cup: C

Shima wears Size Small/AU 10/US 6
Height: 171cm (5’6”)
Cup: B

Liz wears Size Small/AU 10/US 6
Height: 178cm (5’8”)
Cup: D

Alana wears Size Large/AU 14/US 10
Height: 173cm (5’6”)
Cup: DD

Laura wears Size Large/AU 14/US 10
Height: 178cm (5’8”)
Cup: G

Jessie wears Size 2X/AU 18/US 14
Height: 171cm (5’6”)
Cup: F

Delivery & Returns

Standard and express shipping available depending on your region.

Easy returns: 14 day money back guarantee on all full price orders. We offer exchanges, 110% of your purchase price as store credit or refunds on all full-price orders.

Click here for our full returns policy and all shipping info.

FAQs

Does this top have an underwire?
Yes. A hidden underwire works with the built-in inner bra to give you proper lift, separation and support – without it looking like a bra from the outside.

Does it suit a bigger bust?
Yes – it was designed specifically for fuller busts and fits D–F cups. If you're above an F cup, this style may not give you the support you need.

Does it have padding?
No. The support comes from the underwire and inner bra, not foam, so you get lift and shape without padding or bulk.

Can I adjust the fit?
Yes. The adjustable bust straps let you control the lift, and the 6-channel underbust slider lets you fine-tune the band until everything feels exactly where it should.

Does it run true to size?
True to size. Sizes run XS–3X (AU 8–20) - check our size guide to find yours.

What's the coverage like?
The clean square neckline keeps it sleek and feminine, while side bust coverage keeps everything contained. Secure where it matters, sexy where it counts.

What's the fabric like?
Chlorine-resistant Luxe Crinkle with a textured, elevated finish and brushed gold Fearless hardware. It's made to hold its shape and keep looking good, swim after swim.

Are colours true to photos?
Yes. Colours are photographed in natural light, though slight variation can occur depending on screen settings.

Style With

  • A woman modeling a black two-piece bikini on a boat in a marina setting with water and sailboats in the background. A woman modeling a black two-piece bikini on a boat in a marina setting during golden hour, with water and boats visible in the background.

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  • A woman modeling a two-piece black bikini with a keyhole detail on the bra, standing outdoors next to potted green plants. A woman wearing a black two-piece bikini swimsuit, shown from the back in an outdoor patio setting with plants and a dark blue brick wall.

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View full details

Fabrication: LuxeCrinkle

  • A close-up texture shot of a black fabric or material surface.

    Texture

    Sculpting crinkle

  • A woman modeling a black square-neck bralette against a warm beige textured background.

    Benefits

    Lifts and holds

  • A woman modeling a black two-piece bikini on a boat deck with a marina background of boats and water.

    Wear to

    Beach, pool, sauna

  • A woman modeling a black two-piece bikini set against a textured beige studio background.

    Best for

    Relaxed feel, disguising texture

Front and back line drawings of a female torso and upper legs showing a shapewear/compression garment, with handwritten feature callouts on a light beige background.

Sick of feeling like an afterthought

Support where it matters and sexy where it counts. Finally, a bikini top that gives bigger boobs the lift they deserve (without sacrificing the look).

Why You Can Trust Our Sizing

We surveyed 15,000 women before designing a single item and we're still listening.

Every item is fitted and tested on two sizes - a 10/12 (C-Cup) and a 14/16 (E-Cup) - then trialled on real women in their 20s to their 60's. Because no two bodies are the same.

When our fabric ran small, we changed the sizing. Feedback beats data, every time.

Sizes XS-3X. Built for the body you actually have.

As Seen On

  • Square Bikini, Side Tie Bottoms

    Jessie wears size 2X, F cup, 171cm

  • Square Bikini, Classic Bottoms

    Liz wears size S, D cup, 178cm

  • Square neck bikini

    Shima wears size S, B cup, 171cm

  • Square bikini

    Alana wears size L, DD cup, 173cm

  • Square bikini

    Jessie wears size 2X, F cup, 171cm

Still Not Sure?

Finding a swimsuit that actually sculpts, supports and survives the ocean without a wardrobe malfunction? We used to think that was a myth too. Don't take our word for it - real women are already raving about the fit, the comfort and the "wait, this actually works" confidence Fearless delivers.