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Busty Basics

Sweetheart Half sleeve - Black

Name: Busty Basics - Sweetheart Half sleeve - Black
Brand: MARVELL LANE
SKU: MLC-BBSWEET-BLK-8DF
Price: 74.95 AUD
Availability: InStock

$74.95 AUD

Colour

Product variants

Low stock

SIZING ADVICE

Select your shirt size, then your cup size.

If you're between shirt sizes, we recommend sizing down for a nice firm fit through the body (perfect for tucking into high-waisted bottoms), or sizing up for a little more wiggle room.

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

Our sweetest style yet, the Busty Basics Sweetheart Top offers a girly twist to our Half Sleeve Top design. With a subtle sweetheart neckline and feminine fitted sleeves to the elbow, this style adds an elegant touch to any outfit.

What makes them busty?

A simple, but revolutionary idea: Clothing with room for your boobs.

All of our Busty Basics Tops are designed with extra space built in to the bust area and a standard fit everywhere else. This means you can achieve a perfect fit all over - no more sizing up just to fit your boobs!

FEATURES

Double-layer, stretchy ribbed construction
Cut with extra space just in the bust area
Figure-hugging, firm fit
Bra-concealing neckline
A touch of extra length in the front body - no accidental crop tops!

FABRIC & CARE

48% COTTON, 47% VISCOSE, 5% SPANDEX

Cold hand wash or gentle machine wash on cold cycle with mild detergent. Line dry out of direct sunlight.

MODEL INFO

Who is who? See our model index here.

Natasha wears a size 16F bra, size 16 dress, and size 18 briefs.

Jemimah wears a size 8F bra, size 8 dress, and size 8 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.

Build your bundle:

Busty Basics Raglan T-Shirt - Single Layer - Steel Blue $69.95 AUD

Busty Basics Raglan T-Shirt - Single Layer - Khaki $69.95 AUD

Busty Basics Raglan T-Shirt - Single Layer - White $69.95 AUD

Busty Basics Tank - Single Layer - White $64.95 AUD

Busty Basics Tank - Single Layer - Steel Blue $64.95 AUD

Busty Basics T-Shirt - Single Layer - White $69.95 AUD

Busty Basics T-Shirt - Single Layer - Khaki $69.95 AUD

Busty Basics Scoop Tank - Single Layer - White $64.95 AUD

Busty Basics Scoop Tank - Single Layer - Khaki $64.95 AUD

Busty Basics Half Sleeve - Single Layer - White $69.95 AUD

Busty Basics Half Sleeve - Single Layer - Khaki $69.95 AUD

Busty Basics Scoop Tank - Single Layer - Black $64.95 AUD

Busty Basics T-Shirt - Single Layer - Black $69.95 AUD

Busty Basics Raglan T-Shirt - Single Layer - Black $69.95 AUD

Busty Basics Tank - Single Layer - Black $64.95 AUD

Busty Basics Half Sleeve - Single Layer - Black $69.95 AUD

Busty Basics Raglan Top - Ruby $79.95 AUD

Busty Basics Raglan Top - Navy $79.95 AUD

Busty Basics Sweetheart Half Sleeve - White $74.95 AUD

Busty Basics Henley Half Sleeve - White $79.95 AUD

Busty Basics Henley Half Sleeve - Navy $79.95 AUD

Busty Basics Crew Neck T-shirt - White $69.95 AUD

Busty Basics T-shirt - Spring $69.95 AUD

Busty Basics T-shirt - White $69.95 AUD

Busty Basics Tank - Spring $64.95 AUD

Busty Basics Tank - White $64.95 AUD

Busty Basics Henley Snap Top - Black $84.95 AUD

Busty Basics Henley Snap Top - White $84.95 AUD

Busty Basics Long sleeve - Chocolate $79.95 AUD

Busty Basics Crew Neck Long Sleeve - Black $79.95 AUD

Busty Basics Crew Neck Long Sleeve - White $79.95 AUD

Busty Basics Crew Neck T-shirt - Chocolate $69.95 AUD

Busty Basics Tank - Chocolate $64.95 AUD

Busty Basics Henley Tank - Air $64.95 AUD

Busty Basics Henley Half Sleeve - Black $79.95 AUD

Busty Basics Crew Neck T-shirt - Black $69.95 AUD

Busty Basics Knot Front Half Sleeve $74.95 AUD

Busty Basics Notch Neck Tank $64.95 AUD

Busty Basics T-shirt - Black $69.95 AUD

Busty Basics Tank - Black $64.95 AUD

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 security.

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 19 reviews.

Great ft

Deb D. 5/5 Verified August 30, 2026

Busty Basics - Sweetheart Half sleeve - BLACK

Amazing quality softness comfortable chic and makes the girls look their best yet 😍

Angie D. 5/5 Verified April 27, 2026

Busty Basics - Sweetheart Half sleeve - BLACK

Store owner replied: Thank you so much for your lovely review Angie!!! 🤍 xxx

May 7, 2026

Love the fit

Lucy F. 5/5 Verified March 23, 2026

Busty Basics - Sweetheart Half sleeve

Store owner replied: 💗💗💗

April 7, 2026

Fabulous

Paula Bate B. 5/5 Verified March 14, 2026

Busty Basics - Sweetheart Half sleeve

Store owner replied: 🫶

April 7, 2026

Great

Amanda B. 5/5 Verified December 2, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Thanks Amanda! X

December 8, 2025

Great quality, thick fabric. Perfect fit.

Julie S. 5/5 Verified November 24, 2025

Busty Basics - Sweetheart Half sleeve - BLACK

Good fit.

Christine S. 4/5 Verified November 20, 2025

Busty Basics - Sweetheart Half sleeve

Excellent quality and fit is perfect. Have gotten so many compliments on how flattering the shape is… ❤️❤️❤️

Cristie K. 5/5 Verified October 28, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Hey Cristie! So glad to hear you are loving wearing our Busty Basics Sweetheart Half Sleeve. We are so proud of the quality of our pieces and are so happy you are enjoying wearing our garments for this reason!! Thank you so much for your review 💞💞 xx

October 29, 2025

So beautiful, comfortable, and flattering. I have purchased four of the busty basics tops within the last six weeks and love them all. This one is no exception.

Amanda S. 5/5 Verified October 27, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Hey Amanda! We LOVE this review. Thank you so much for your continued support and for loving our Busty Basics!! So glad you have found your staple pieces in ML. Thank you for your lovely review 💗💗 xxx

October 28, 2025

I didn't even know it was possible to get tops that fit this perfectly!

Edith S. 5/5 Verified October 22, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Hey Edith, love this feedback on our Busty Basics Sweetheart. Thank you so much for leaving us your review 💗 xx

October 24, 2025

I now have about 7 of the busty basics tops (different cuts, colours and styles), and love them all. Live in them for work pretty constantly. They were also perfect for a work/family trip overseas where I had to both attend a conference and also wrangle a toddler, at a time when I was trying to limit lugagge as much as possible - amazing travel capsule wardrobe options.

Claire G. 5/5 Verified October 2, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Hey Claire! Thank you so much for leaving your review on our Busty Basics and for your ongoing support. We love that ML has become a staple in your wardrobe ❤️

October 2, 2025

Claire G. 5/5 Verified October 2, 2025

Busty Basics - Sweetheart Half sleeve

Claire G. 5/5 Verified October 2, 2025

Busty Basics - Sweetheart Half sleeve

Really stylish, flattering and comfortable!

Justine S. 5/5 Verified September 30, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Hey Justine! Love to hear you are loving your Busty Basics Sweetheart Half Sleeve! Thank you so much for taking the time to leave us your review xx

September 30, 2025

Amazing fit, wish I had purchased a lot earlier! Will be buying more in every colour

Bianca R. 5/5 Verified August 11, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Thank you so much for your kind words Bianca! We can't wait to release new colours! x

August 11, 2025

Great material fits really well. But would absolutely love to see these tops in an Olive green

Shirin M. 5/5 Verified June 27, 2025

Busty Basics - Sweetheart Half sleeve

Perfect. 👌

Shelley P. 5/5 Verified June 5, 2025

Busty Basics - Sweetheart Half sleeve

Perfect fit. I wish you were around 30 years ago. I got tired of the t-shirt shelf

Janice K. 5/5 Verified May 26, 2025

Busty Basics - Sweetheart Half sleeve

Store owner replied: Thank you so much for your kind words Janice! We're thrilled to hear it's a perfect fit. We wish we were around 30 years ago too - but we're so glad to be here for you now!

May 26, 2025

Great quality. Beautiful flattering sweetheart cut. Great staple

Michelle R. 5/5 Verified May 16, 2025

Busty Basics - Sweetheart Half sleeve