1 8

Lexi Bikini Brief - Black

Name: Lexi Bikini Brief - Black
Brand: Marvell Lane
SKU: MLS-LEXI-BLK-8
Price: 79.95 AUD
Availability: InStock

$79.95 AUD

Colour

Product variants

SIZING ADVICE

Go with your usual briefs size. If you're between sizes or not 100% sure, we recommend sizing up to avoid any cutting in.

Remember, swimwear can only get bigger over time - it will expand when it gets wet, and continue to give as you wash and wear it. When your bikini briefs are brand new, they should feel nice and firm, it's the smallest they'll ever be!

Need a hand figuring out your size?

We're here to help!

Pickup available at Byron Warehouse

Usually ready in 24 hours

30 day returns

Free exchange on
your first order

Meet LEXI: The Lexi Brief is a 90’s inspired high waisted design with an extended leg line.

This brief offers medium coverage and a flattering fit, sculpting the hips while resting comfortably just below the belly button.

FEATURES

Powermesh lining - super quick drying!
Buttery soft, super strong recycled construction
Extra-sturdy elastic around the waist and legs - no weird stretching out!

Super high-cut leg
Waistband detail

FABRIC & CARE

Fabric Outer - 78% Recycled Nylon & 22% Xtra Life Lycra ®

Fabric Inner - 75% Nylon & 25% Spandex

Cold hand wash only. Do not machine wash, soak or bleach product.
Rinse immediately and dry thoroughly after wearing in salt or chlorine water.
Line dry out of direct sunlight.
Do not wear on rough surfaces.

MODEL INFO

Who is who? See our model index here.

Maria wears a size 12G bra, size 14 dress, and size 16 briefs.

Sienna wears a size 8F bra, size 8 dress, and size 8 briefs.

Peta wears a size 10G bra, size 10 dress, and size 10 briefs.

SHIPPING & RETURNS

Please take a moment to familiarise yourself with our policies before purchasing:

Shipping Rates & Information

Returns Policy

Please keep in mind sale items cannot be returned for a refund, only for store credit or an exchange.

All lingerie briefs are final sale.

How to Measure

1. Overbust

In a non-padded, preferably underwired bra, measure around the fullest part of your bust, holding the tape measure gently against your body.

2. Underbust

Measure firmly around your ribs, just below the roots of your breasts, keeping the measuring tape parallel to the floor.

3. Waist

Measure around the smallest part of your natural waist, usually near the bottom of your ribcage.

4. Hips

Measure around the widest part of your hips and bum, keeping the tape measure parallel to the floor.

Diagram showing where to measure overbust, underbust, waist, and hips

Measurements don't tell the whole story.

For the most accurate size advice, consider using one of our free fitting services to get personalised recommendations from an expert.

Free Fitting

All measurements are in centimetres.

Step One

Underbust

AU Band Size	8	10	12	14	16	18
US Band Size	30	32	34	36	38	40
Underbust	66-71	71-76	76-81	81-86	86-91	91-96

Step Two

Overbust

Within your band size's column, locate your overbust measurement below to find your cup size.

		AU Band Size
		8	10	12	14	16	18
AU Cup Size	D	83-85	88-90	93-95	98-100	103-105	108-110
	DD	85-87	90-92	95-97	100-102	105-107	110-112
	E	87-89	92-94	97-99	102-104	107-109	112-114
	F	89-91	94-96	99-101	104-106	109-111	114-116
	FF	91-93	96-98	101-103	106-108	111-113	116-118
	G	93-95	98-100	103-105	108-110	113-115	118-120
	GG	95-97	100-102	105-107	110-112	115-117	120-122
	H	97-99	102-104	107-109	112-114	117-119	122-124
	HH	99-101	104-106	109-111	114-116	119-121	124-126
	J	101-103	106-108	111-113	116-118	121-123	126-128
	JJ	103-105	108-110	113-115	118-120	123-125	128-130

All measurements are in centimetres.

Step One

Underbust

AU Band Size	8	10	12	14	16	18
US Band Size	30	32	34	36	38	40
Underbust	66-71	71-76	76-81	81-86	86-91	91-96

Step Two

Overbust

Within your band size's column, locate your overbust measurement below to find your cup size.

		AU Band Size
		8	10	12	14	16	18
AU Cup Size	D	83-85	88-90	93-95	98-100	103-105	108-110
	DD	85-87	90-92	95-97	100-102	105-107	110-112
	E	87-89	92-94	97-99	102-104	107-109	112-114
	F	89-91	94-96	99-101	104-106	109-111	114-116
	FF*	91-93	96-98	101-103	106-108	111-113	116-118
	G	93-95	98-100	103-105	108-110	113-115	118-120
	GG*	95-97	100-102	105-107	110-112	115-117	120-122
	H	97-99	102-104	107-109	112-114	117-119	122-124

*Our swimwear doesn't currently come in FF or GG cups. We recommend sizing down to an F or G cup for a more busty fit, or up to a G or H cup for a touch more coverage.

All measurements are in centimetres.

Body Size	8	10	12	14	16	18
Waist	62-64	67-69	72-74	77-79	82-84	87-89
Hips	90-92	95-97	100-102	105-107	110-112	115-117

Overbust

Within your body size's column, find your overbust measurement to choose a cup size.

Body size	8	10	12	14	16	18
D	83-85	88-90	93-95	98-100	103-105	108-110
DD	85-87	90-92	95-97	100-102	105-107	110-112
E	87-89	92-94	97-99	102-104	107-109	112-114
F	89-91	94-96	99-101	104-106	109-111	114-116
FF*	91-93	96-98	101-103	106-108	111-113	116-118
G	93-95	98-100	103-105	108-110	113-115	118-120
GG*	95-97	100-102	105-107	110-112	115-117	120-122
H	97-99	102-104	107-109	112-114	117-119	122-124

*Our swimwear doesn't currently come in FF or GG cups. We recommend sizing down to an F or G cup for a more busty fit, or up to a G or H cup for a touch more cpverage.

All measurements are in centimetres.

AU Size	8	10	12	14	16	18	20
US Size	4	6	8	10	12	14	16
Waist	62-64	67-69	72-74	77-79	82-84	87-89	92-94
Hips	90-92	95-97	100-102	105-107	110-112	115-117	120-122

If you're between sizes, we recommend sizing up to avoid any cutting in.

All measurements are in centimetres.

AU Size	8 (D-F)	8 (G-J)	10 (D-F)	10 (G-J)	12 (D-F)	12 (G-J)	14 (D-F)	14 (G-J)	16 (D-F)	16 (G-J)	18 (D-F)	18 (G-J)
US Size	4 (D-H)	4 (I-M)	6 (D-H)	6 (I-M)	8 (D-H)	8 (I-M)	10 (D-H)	10 (I-M)	12 (D-H)	12 (I-M)	14 (D-H)	14 (I-M)
Underbust	66-71	66-71	71-76	71-76	76-81	76-81	81-86	81-86	86-91	86-91	91-96	91-96
Overbust	83-91	91-103	88-96	96-108	93-101	101-113	98-106	106-118	103-111	111-123	108-116	116-128
Waist	65-70	65-70	70-75	70-75	75-80	75-80	80-85	80-85	85-90	85-90	90-95	90-95
Hips	93-98	93-98	98-103	98-103	103-108	103-108	108-113	108-113	113-118	113-118	118-123	118-123

All measurements are in centimetres.

AU Size	8	10	12	14	16	18	20
US Size	4	6	8	10	12	14	16
Waist	65-70	70-75	75-80	80-85	85-90	90-95	95-100
Hips	93-98	98-103	103-108	108-113	113-118	118-123	123-128

All measurements are in centimetres.

Sports Bras

Step One

Underbust

AU Band Size	8	10	12	14	16	18
US Band Size	30	32	34	36	38	40
Underbust	66-71	71-76	76-81	81-86	86-91	91-96

Step Two

Overbust

Within your band size's column, locate your overbust measurement below to find your cup size.

		AU Band Size
		8	10	12	14	16	18
AU Cup Size	D / DD / E	83-89	88-94	93-99	98-104	103-109	108-114
	F / FF	89-93	94-98	99-103	104-108	109-113	114-118
	G / GG	93-97	98-102	103-107	108-112	113-117	118-122
	H / HH	97-101	102-106	107-111	112-116	117-121	122-126
	J	101-103	106-108	111-113	116-118	121-123	126-128

Tanks

AU Size	8 (D-F)	8 (G-J)	10 (D-F)	10 (G-J)	12 (D-F)	12 (G-J)	14 (D-F)	14 (G-J)	16 (D-F)	16 (G-J)	18 (D-F)	18 (G-J)
US Size	4 (D-H)	4 (I-M)	6 (D-H)	6 (I-M)	8 (D-H)	8 (I-M)	10 (D-H)	10 (I-M)	12 (D-H)	12 (I-M)	14 (D-H)	14 (I-M)
Underbust	62-67	62-67	67-72	67-72	72-77	72-77	77-82	77-82	82-87	82-87	87-92	87-92
Overbust	83-91	91-99	88-96	96-104	93-101	101-109	98-106	106-114	103-111	111-119	108-116	116-124

Shorts & Pants

AU Size	8	10	12	14	16	18
US Size	4	6	8	10	12	14
Waist	67-72	72-78	78-84	84-90	90-96	96-102
Hips	94-99	99-105	105-111	111-117	117-123	123-129

Customer Reviews

Overall rating: 4.9 / 5 from 11 reviews.

Customer photo review of LEXI BIKINI BRIEF

Absolutely LOVE my Marvell Lane bikini bottoms! I originally got a 12 but have recently lost some weight and needed to size down. These are perfectly cut, hide the pufa and suck in the mum tum. They are so comfortable and sexy, at 48 I didn't think I could wear such a cheeky cut style but they are so flattering and don't ride up your bum. Rachel is a design genius and you should do yourself a favour and invest in a Marvell Lane wardrobe 💯

Natasha H. 5/5 Verified February 27, 2026

LEXI BIKINI BRIEF

Store owner replied: WOW! Natasha you look absolutely incredible!! What a beautiful review thank you for your kind words and support it means the absolute world to us! It makes us to happy to see how much you’re loving the product and how amazing it’s made you feel, that’s always the goal! Enjoy your new bikini! 🫶🏼

March 2, 2026

I'm so obsessed with these bikini bottoms, the quality is amazing and hold you in, feeling nice and supported. The cut is also super flattering, I get compliments everytime I wear them!

Kerri W. 5/5 Verified May 25, 2025

LEXI BIKINI BRIEF

Fit perfectly true to size and beautiful cut love them

Rebecca R. 5/5 Verified August 23, 2026

LEXI BIKINI BRIEF - BLACK

Store owner replied: Yay! Thank you so much for your review, Rebecca! So glad you’re feeling comfortable and confident in our Lexie bikini brief ☺️

September 7, 2026

Another perfect piece from Marvell Lane! Perfectly cut, I was a little bit concerned that it was a little too cheeky for me as I'm 47 but it's so flattering and doesn't ride up my bum. So flattering on the tummy and fupa too 😂 absolutely gorgeous colour too!

Natasha H. 5/5 Verified February 6, 2026

LEXI BIKINI BRIEF

Store owner replied: Yayyyy so glad you’re loving the Lexi Bikini Brief, and we’re sure it looks amazing on you! Thank you for your review Natasha! ❤️

February 9, 2026

Great fit, feel very flattering and secure for wearing in the surf.

Ellyse M. 5/5 Verified January 5, 2026

LEXI BIKINI BRIEF

Store owner replied: Glad you’re loving the Lexi Brief Ellyse, thank you for your review 💕

January 5, 2026

Perfect amount of coverage on tummy with flattering high leg. Loved that top band is firm but does not dig in - so no spill over. I am quite short (5 foot) but the rise was perfect on me. Highly recommend!

Eloise F. 5/5 Verified July 4, 2025

LEXI BIKINI BRIEF

Love it, I’ve gotten so many compliments!

Noemi B. 5/5 Verified January 16, 2025

LEXI BIKINI BRIEF

Great fit and true to size.

Caledonia C. 5/5 Verified December 7, 2024

LEXI BIKINI BRIEF

Great fit and looks fantastic

Kaysie F. 5/5 Verified December 6, 2024

LEXI BIKINI BRIEF

I found it a little tight around the leg holes. The size 10 fit better around my legs but it was too loose around my stomach. The 8 fits better around my stomach but is slightly on the tight side around my legs, but I decided that was the better option for me.

Katie 4/5 Verified November 28, 2024

LEXI BIKINI BRIEF

Love the colour and the high waist bottom

Jacinta C. 5/5 Verified October 26, 2024

LEXI BIKINI BRIEF