A woman with long, wavy hair wears a black high-waisted bikini with a V-neck top. She stands against a plain, light-colored background with one hand on her hip, looking confidently at the camera.
A woman stands barefoot on a plain background, smiling and posing in a black high-waisted bikini with a plunging neckline and ruched details.
A woman with long, light brown hair poses confidently in a black two-piece bikini with a deep V-neck top and high-waisted bottoms against a plain, light background.
A woman with long, wavy dark hair smiles at the camera against a light background. Her hair is parted in the middle and she has a warm, friendly expression.

Size: M

  • Height: 170cm
  • Bust: 91cm
  • Waist: 76cm
  • Hips: 101cm
  • Bra: C cup

Size: L

  • Height: 165cm
  • Bust: 98cm"
  • Waist: 77cm
  • Hips: 104cm
  • Bra: D cup
A woman with long, wavy, light brown hair smiles at the camera. She has fair skin, wears natural makeup, and is dressed in a black top against a light, neutral background.

Size: 2X

  • Height: 173cm
  • Bust: 109cm
  • Waist: 93cm
  • Hips: 116cm
  • Bra: E cup
Woman wearing a black bikini set with high-waisted bottoms. Text points to features: Fits A–F cups, Elasticated, adjustable straps, and Bust sliders to adjust coverage. Neutral background.
Wearing the All Day Bikini Top-Matte Black by Fearless au, a woman stands confidently by the pool with a drink in hand, sunglasses on, and one hand on her hip amid lush greenery.A smiling woman stands barefoot on a sunny patio, wearing the Fearless au All Day Bikini Top in Matte Black and a shell necklace, with green plants and a large potted bush in the background.A woman wearing the Fearless au All Day Bikini Top-Matte Black stands in a pool, smiling with one hand on her hip and the other holding a striped inflatable ring, her supportive swimwear ensuring comfort amidst lush greenery.A woman stands barefoot on a patio, smiling with one hand on her head, wearing the Fearless au All Day Bikini Top in Matte Black and a beaded necklace. Lush greenery and a decorative planter are visible in the background.A woman with long, wavy dark hair wears a black, V-neck bralette with gathered straps. She faces the camera against a light background, looking relaxed and confident.Woman wearing a Fearless supportive bust and high waist black bikini against a plain background.Woman wearing a Fearless supportive bust and high waist black bikini against a plain background.Woman wearing a full coverage, supportive bust, black bikini set on a plain background. High waist bikini bottoms.Woman wearing a Fearless supportive bust and high waist black bikini against a plain background.Woman wearing a Fearless supportive bust and high waist black bikini against a plain background.Woman wearing a black bikini set against a plain backgroundWoman wearing a Fearless supportive bust and high waist black bikini against a plain background.Woman wearing a Fearless supportive bust and high waist black bikini against a plain background.Woman in a Fearless black supportive bust and high waist one piece swimsuit standing by a waterfront, sunlit backgroundWoman in a Fearless black supportive bust and high waist one piece swimsuit standing by a waterfront, sunlit backgroundWoman in a Fearless black supportive bust and high waist one piece swimsuit standing by a waterfront with a hat, sunlit backgroundWoman in a Fearless black supportive bust and high waist one piece swimsuit standing by a waterfront, sunlit backgroundA black bralette-style bikini top with wide shoulder straps and a deep V neckline, displayed against a plain white background.Fearless premium luxe smooth fabric in black. Fearless swimwear is designed to withstand ocean swims, pool laps and long summer days - not stretch out after a handful of wears.

Model view

Features

Images

  • A woman with long, wavy dark hair models the Fearless au All Day Bikini Top in Matte Black—a sleeveless, V-neck style with gathered straps—standing against a plain light background and exuding confidence, ideal for those seeking supportive swimwear.
  • A close-up of a woman's back highlights the adjustable straps and clasp of the Fearless au All Day Bikini Top-Matte Black, designed for supportive swimwear, set against a neutral background.
  • A close-up shows a medium-skinned person wearing the Fearless au All Day Bikini Top-Matte Black, featuring wide crisscrossed straps and gold hardware—an ideal supportive swimwear choice. Long, dark hair is partially visible.
  • A smiling woman with long red hair wears the Fearless au All Day Bikini Top and black bottoms on a sandy beach with water and boats in the background. Text below reads, GEORGIE WEARS SIZE SMALL.
  • A woman stands on a sandy beach facing away, wearing the Fearless au All Day Bikini Top in black with a high-waisted bottom and earrings. Her hands are raised behind her head. Boats and water are in the background. Text: GEORGIE WEARS SIZE SMALL.
  • Woman in a black bikini standing by a waterfront with a straw hat, sunlit background.
  • Woman wearing a black bikini and straw hat by a body of water.
  • Woman wearing a black swimsuit and straw hat by a waterfront at sunset
  • Woman in a black bikini and straw hat by a body of water
  • The Fearless au All Day Bikini Top-Matte Black features a wireless, deep V-neck design with wide straps and a supportive underband, ideal for big busts, shown on a plain white background.
  • Fearless premium luxe smooth fabric in black. Fearless swimwear is designed to withstand ocean swims, pool laps and long summer days - not stretch out after a handful of wears.
1 11

All Day Adjustable Bikini Top

$129
$129
Why It's Worth It
Shipping calculated at checkout.

or 4 X $32.25 with

Final release. No restocks once sold out.

Colour: Matte Black
Size AU 6 / US 2 / EU 34
XS AU 6 / US 2 / EU 34
S AU 8 / US4 / EU 36
M AU 10 / US 6 / EU 38
L AU 12 / US 8 / EU 40
XL AU 14 / US 10 / EU 42
2X AU 16 / US 12 / EU 44
3X AU 18/ US 14 / EU 46

Size Guide


$15 Off Your First Order When You Sign Up*

Bust Support:

Bust Support: Excellent

Details

Designed for the woman who swears she’s “not a bikini girl.”

The The All Day Bikini Top is a high-support bikini top for women who want lift, shape and comfort without underwire. Created to fit small and large busts from A-F cups, this adjustable bikini top delivers secure support, flattering coverage and all-day wearability.

If you’ve struggled to find a supportive bikini for a big bust or want more shape for a smaller bust, this is the style that changes everything. With wide straps that stay in place, built-in bust support and customisable lift, you can swim, move and relax without slipping, digging or adjusting.

The All Day Bikini Top was created for women who usually scroll straight past bikinis. With real bust support, a clean flattering cut, and wide straps that don’t fall down, this bikini top gives you lift, shape and comfort - without the digging, slipping or awkward adjusting.

WHY WOMEN LOVE THIS SUPPORTIVE BIKINI TOP:

  • Adjustable bust sliders to customise your fit and cleavage
  • Designed to support A-F cup sizes
  • High bust support without underwire
  • Wide, adjustable elastic straps - wear straight or cross-back
  • Cross-back styling for extra lift and security for a fuller bust
  • Made from luxury recycled swim fabric with an ultra-matte finish
  • Fully lined for security and comfort
  • No padding or foam cups
  • Premium gunmetal hardware
  • Chlorine resistant swimwear - 4/5 rating
  • Flattering neckline designed for confident coverage
  • Subtle side-bust shaping for a flattering silhouette
  • Designed to match the All Day Bottoms

Need maximum support? Wear the straps crossed for enhanced lift, reduced bounce and a more secure fit - especially if you’re looking for large bust swimwear that stays put on active beach days.

Every Fearless swimsuit is designed for real women and fit-tested on 150+ bodies to ensure supportive, comfortable and seriously flattering swimwear across sizes.

Limited edition. No restocks.
When this supportive bikini top sells out, it will not return.

Shop All Bikini Tops

Fabric & Care

This swimsuit is made from an ultra matte, silky smooth fabric - so chic you can wear it as a bralette too. (Two looks, one purchase!)

Outer: 75% recycled nylon, 25% elastane
Lining: 86% polyester, 14% elastane

Sustainability isn’t just about recycled materials - it’s about investing in high quality pieces that last for seasons. With the right care, your Fearless swimwear will stay looking incredible wear after wear.

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

Then treat yourself to a nap - because laundry is the worst.

Country of Origin: China

What’s My Size

Click the "What's My Size" button under the size selector for a personalised Fit Quiz!

We worked hard to make our swimsuits fit 'true to size'. If you sometimes wear a bigger size or are between sizes, then size up. That said, it's a compressive swimsuit, designed to help you feel held and supported (like wearing your favourite activewear)!

ABOUT OUR MODELS:

Yaz wears size M - usually wears AU 10
Height: 170cm (5’7”)
Bust: 91cm (36”)
Waist: 76cm (30”)
Hips: 101cm (40”)
Bra: 10C, UK/US 34C, EU 75C

Lyndi wears size L - usually wears AU 12
Height: 165cm (5’5”)
Bust: 98cm (38.5”)
Waist: 77cm (30.3”)
Hips: 104cm (41”)
Bra: 12D, UK/US 36D, EU 80D

Mercy wears size 2X - usually wears AU 16
Height: 173cm (5’8”)
Bust: 109cm (43”)
Waist: 93cm (36.5”)
Hips: 116cm (45.5”)
Bra: 16E, UK/US 38DD, EU 85E

Delivery & Returns

Swimsuit shopping doesn't have to suck.

We know we needed to make returns easy and affordable to spare you those awful change room lights - and help you try Fearless without regret or worry.

Click here for our returns and exchanges policy. And find our shipping info here.

FAQs

Does this top have an underwire?
No. This style is completely wire free with a built in under bust support. It’s fully lined with no padding or foam inserts.
Does it suit a fuller bust?
Absolutely! This style is best suited for an A-F cup. If you have a fuller bust, you can cross the straps for maximum lift, no slips, no neck strain and zero adjusting - even on active beach days.
Does it run true to size?
Yes. Choose your usual size based on our size guide.
Is the coverage minimal?
Coverage is moderate with a flattering neckline - designed to feel confident, not revealing. There is a subtle peak of side boob but nothing too crazy!
Are colours true to photos?
Yes. Colours are photographed in natural light, but slight variation can occur depending on screen settings.
What’s the fabric like?
Made from our UltraSmooth fabric with gunmetal hardware - this style also has a ⅘ chlorine resistance rating.
View full details

Why Women Choose Fearless

Support for Bigger Busts

Support for Bigger Busts

Support for Bigger Busts
Choose Your Coverage

Choose Your Coverage

Choose Your Coverage
Tummy Control Compression

Tummy Control Compression

Tummy Control Compression
Chlorine & Fade Resistant

Chlorine & Fade Resistant

Chlorine & Fade Resistant