What size should I select in the Classic Square Neck one piece?

This style runs true to size with a firm, sculpting fit. If you’re between sizes or have a long torso or curvier hips, go up one size. Suits A–J cup sizes. See the women’s swimwear size guide for measurements when selecting your size.

Is this a supportive one piece swimsuit for bigger busts without underwire?

Yes. The InvisiBust Support Technology uses a panelled, fully lined bodice to lift and hold without bulky cups or underwire. It’s designed for A–J cup sizes and is praised for how comfortable it is to wear.

Is the Classic Square Neck one piece see-through when wet?

No, this is a fully lined swimsuit is made with recycled lining for reliable coverage in and out of water. The panelled bodice also keeps the fabric flat so it doesn’t go sheer when wet.

Is the fabric UPF50+ and chlorine resistant for pool use?

Yes. The recycled fabric is UPF50+ (blocks 98% of UV rays) and ultra chlorine resistant. Rinse after every swim and line dry out of direct sun to keep colour and elasticity strong.

Can the Classic Square Neck One Piece fit up to an E cup?

Yes. The Classic Square Neck One Piece is designed to support a wide range of bust sizes, from A to J cup sizes. Many women with larger busts love this style for its supportive, secure fit and wear it in their usual clothing size.

Does the Classic Square Neck have tummy control?

Yes. The Classic Square Neck One Piece is designed with a fully lined and carefully panelled bodice for a supportive, firm fit that helps flatter and shape the body. The elegant lines are designed to feel secure and sculpting, while the fit may vary depending on your body shape and personal preference.

Textured Classic Square Neck One Piece Swimsuit
Monochrome Texture

Name: Classic Square Neck MONOCHROME TEXTURE
Brand: UNE PIECE
SKU: CSNTD-CBB-6
Price: 280.0 NZD
Availability: InStock
Rating: 4.7 (1885 reviews)

$311.00 NZD $280.00 NZD

Colour:

Our best-selling and most-loved swimsuit since the day it was launched. Featuring an elevated square neckline with removable-bows that creates two beautiful looks. A fully lined one piece in luxurious textured fabric.

Wildly flattering and confidence boosting - it will be the swimsuit you reach for on repeat. This product has a generous fit. If you are in between sizes, we recommend choosing the smaller of the two. This relates only to styles in this textured fabric.

BUST SUPPORT: Excellent bust support without cups or padding. Perfect for any bust size.
BOTTOM COVERAGE: High coverage. Our fullest coverage.
COMPRESSION: A firm, supportive fit that features panelling that lifts the bust and contours the body. Swimwear should fit snuggly when dry, so it will remain supportive when wet.

Super-supportive InvisiBust Support Technology - a fully lined and carefully panelled bodice designed for a supportive and firm fit
Sustainable UPF50+ fabric blocks 98% of UV rays
Ultra chlorine resistant
Pilling and sun cream resistant
UNE PIECE swimwear is made from recycled and sustainable fabrics and linings

Fast Shipping - Australia

We offer fast and reliable shipping options from our Brisbane warehouse:

Express: 1-2 business days
Standard: 2-5 business days

Note: Place your order by 1pm AEST for same-day dispatch.

Find all shipping times at unepiece.com/shipping.

Method	Time	Cost
Express	1-2 business days	FREE - Orders over $250 $9.95 - Orders under $250
Standard	2-5 business days	FREE - Orders over $200 $8.95 - Orders under $200

Starting a return or exchange is easy! Exchanges and store credits are free.

Exchange - Free exchanges must be initiated and received within 14 days of your order's delivery date.
Return for store credit - Free returns for store credit must be initiated within 14 days of your order's delivery date.
Return for original form of payment - Returns must be initiated and completed within 14 days of your order's delivery date. Mail-in returns have a $9 handling fee per return label (which is waived if you opt for store credit or an exchange!)

Please note that sale items, earrings, underwear, and bralettes are final sale and not eligible for return or exchange.

All returned products must be unused, with original tags attached and hygiene stickers intact.

Learn more at unepiece.com/returns.

Our first model wears size AU 8 (US 4). She is 179cm (5'10.5") tall with an 84cm (33") bust, a 69cm (27") waist and 94cm (37") hips. Our second model wears size AU 8 (US 4) and is 155 cm (5’1”) tall.

We follow standard sizing guidelines and make our products true to size.

Our swimsuits are constructed with a firm fit to flatter your shape. If you are between sizes, we recommend choosing the larger of the two sizes. For example, if you wear a size 10 in the top but a size 12 on the bottom (or vice versa) we recommend you purchase a size 12.

Find size measurements and international size conversions at unepiece.com/sizing.

Main: 66% Recycled Nylon 25% Nylon 9% Elastane Lining: 78% Recycled Nylon 22% Elastane

To keep your UNE PIECE looking beautiful, please carefully follow our care instructions:

Cold hand wash
Do not soak, bleach or dry clean
Do not spin or tumble dry
Do not iron
Line dry out of direct sunlight
Do not pack or store when wet
Remove any excess water and dry without delay
Separate light colours from dark before washing

CM IN

AU/UK	Bust	Underbust	Waist	Hips
US	Bust	Underbust	Waist	Hips
6 (XS)	76 - 80	64 - 68	59 - 63	86 - 90
8 (S)	81 - 85	69 - 73	64 - 68	91 - 95
10 (S)	86 - 90	74 - 78	69 - 73	96 - 100
12 (M)	91 - 95	79 - 83	74 - 78	101 - 105
14 (M)	96 - 100	84 - 88	79 - 83	106 - 110
16 (L)	101 - 105	89 - 93	84 - 88	111 - 115
18 (L)	106 - 110	94 - 98	89 - 93	116 - 120
20 (XL)	111 - 115	99 - 103	94 - 98	121 - 125
22 (XL)	116 - 120	104 - 108	99 - 103	126 - 130
24 (XXL)	121 - 125	109 - 113	104 - 108	131 - 135
2 (XS)	29.9 - 31.5	25.2 - 26.8	23.2 - 24.8	33.9 - 35.4
4 (S)	31.9 - 33.5	27.2 - 28.7	25.2 - 26.8	35.8 - 37.4
6 (S)	33.9 - 35.4	29.1 - 30.7	27.2 - 28.7	37.8 - 39.4
8 (M)	35.8 - 37.4	31.1 - 32.7	29.1 - 30.7	39.8 - 41.3
10 (M)	37.8 - 39.4	33.1 - 34.6	31.1 - 32.7	41.7 - 43.3
12 (L)	39.8 - 41.3	35 - 36.6	33.1 - 34.6	43.7 - 45.3
14 (L)	41.7 - 43.3	37 - 38.6	35 - 36.6	45.7 - 47.2
16 (XL)	43.7 - 45.3	39 - 40.6	37 - 38.6	47.6 - 49.2
18 (XL)	45.7 - 47.2	40.9 - 42.5	39 - 40.6	49.6 - 51.2
20 (XXL)	47.6 - 49.2	42.9 - 44.5	40.9 - 42.5	51.6 - 53.1

Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23

This product has a generous fit. If you are in between sizes, we recommend choosing the smaller of the two. This relates only to styles in this textured fabric.

How to measure

Bust: Using a flexible tape measure, measure across the fullest part of your chest, ensuring the tape measure is straight across your back.
Underbust: Measure directly under your bust, where the band of a bra would sit.
Waist: Measure around your natural waistline — this is the narrowest part of your torso, usually right above your belly button.
Hips: Stand with your heels together and measure around the fullest part of your hips and bottom.

Overall rating: 4.71565 / 5 from 1885 reviews.

AI Generated Review Summary

The Classic Square Neck MONOCHROME TEXTURE swimsuit is praised for its flattering look, excellent quality, and supportive fit. Customers love its one-piece design, soft and sustainable fabric, and the beautiful color. The product is also noted for its UV protection and chlorine resistance.

Summary topics

Appearance (8%): Customers raved about the flattering look of the product, with many mentioning that it looks great.
One-Piece Design (8%): Customers raved about this one piece, with many expressing their love for it and calling it perfect and beautiful.
Product Quality (15%): Many customers loved the quality of the product, describing it as excellent, great, amazing, and very nice.
Comfort (12%): Customers appreciated how these bathers feel on, describing them as soft, comfortable, and great.
Bathing Suit Satisfaction (8%): Customers expressed satisfaction with the bathers, stating they are the best they have ever bought.

Review topics: ["size","fit","length","support","fabric","material","looks","colour","stretch","style","feel","issues","design","lining","quality","legs","shape","comfort","cut","pants","customer service","coverage","neckline","addition","straps","pattern","texture","pair","padding","structure"].

Review highlights

"Absolutely divine bathers, the colour, style and fit are great and I feel comfortable and confident" — Stacey B.
"Beautiful high quality fabric, love the look with the bows, I think it elevates the look." — Carmen
"Stunning swimsuit, gorgeous fabric, fit and support." — Janelle R.

Reviews

Absolutely the best bathers and

"Absolutely the best bathers and worth every cent! For a midsize mum who used to hate getting into bathers you can’t get me out of these and I’m finally enjoying swimming again with my kids! They fit nice and snug, holding everything in place and look incredibly stylish with the extra tie up shoulders that can be removed. I think I’ve bought nearly every colour cos they also look great under shorts or long skirts having drinks and nibbles by the pool ☺️"

— Lisa N. (5/5)

Most beautiful flattering fit for

"Most beautiful flattering fit for a larger bust. I now have these in three colours! So comfortable, my favourite bathers"

— Lisa C. (5/5)

Best suit!

"I have this suit in black from last season and bought navy blue this year. They are the only suits I wear and always get compliments. I do not wear the bows. For reference, I’m 54 years old, wear a size 6 , 34 DD and I never worry about a wardrobe malfunction with this suit. Very flattering!"

— Marisa P. (5/5)

Beautiful swimsuit, being a larger

"Beautiful swimsuit, being a larger bust it provided great coverage and was true to size. Lovely fabric and styling. Very happy."

— Michelle P. (5/5)

Loved the look online, but

"Loved the look online, but it didn't fit me well - body was long and the chest/shoulder straps too wide. . . the next size down was too tight. . . maybe just the wrong shape for me."

— Mary C. (3/5)

I am a big fan

"I am a big fan of this shape and had to buy a smaller size due to losing a lot of weight. They fit like a glove and lift up the bust. By far the most flattering swimwear I have ever owned."

— Joyce V. (5/5)

Absolutely in LOVE with the

"Absolutely in LOVE with the quality and fit of this one! The fabric is buttery soft and feels amazing on the skin! There is a perfect ratio of stretch and firmness ensuring a secure, comfortable and flattering fit. Only thing is add is padding around the ‘ladies’ - not everyone needs to know when I’m feeling cold! 🤣 Definitely 10/10!"

— Rachel C. (5/5)

The best bathers I have

"The best bathers I have ever purchased. They fit really well & I feel confident wearing them"

— Cass S. (5/5)

Fit is perfect- very flattering

"Fit is perfect- very flattering shape!"

— Erin S. (5/5)

Pleasant surprise!

"I am always skeptical about ordering online but, wow, was I surprised. Bathing suit fit exactly according to size chart, held me in in all the right places, and is really high quality. I loved everything about the suit and it arrived in one day! Could not be happier and definitely ordering another."

— Nicole M. (5/5)

Q&A

Frequently Asked Questions

Both our Crinkle and Classic one piece swimsuits are designed with supportive bust features. Our Crinkle cut swimwear has superior built-in bust support with removable padded inserts, giving it a soft, flexible, and supportive fit. Our Classic one piece features InvisiBust Support Technology for excellent bust support with a firmer, more sculpting feel on the body.

Textured Classic Square Neck One Piece Swimsuit
Monochrome Texture

How to measure

AI Generated Review Summary

Summary topics

Review highlights

Reviews

Absolutely the best bathers and

Most beautiful flattering fit for

Best suit!

Beautiful swimsuit, being a larger

Loved the look online, but

I am a big fan

Absolutely in LOVE with the

The best bathers I have

Fit is perfect- very flattering

Pleasant surprise!

Q&A

Frequently Asked Questions

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Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23

Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23

Textured Classic Square Neck One Piece Swimsuit Monochrome Texture

AI Generated Review Summary

Summary topics

Review highlights

Reviews

Absolutely the best bathers and

Most beautiful flattering fit for

Best suit!

Beautiful swimsuit, being a larger

Loved the look online, but

I am a big fan

Absolutely in LOVE with the

The best bathers I have

Fit is perfect- very flattering

Pleasant surprise!

Q&A

Textured Classic Square Neck One Piece Swimsuit
Monochrome Texture

Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23