Lingerie Size Guide | Find Your Perfect Fit

Measure with confidence

Size Guide

Underwire Conversion Chart
Select your band size along the top, and cup size down the side to find the best fit.

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

Under Bust Measurement (inch)

US Band	30	32	34	36	38
Under Bust	24-26	27-28	29-30	31-32	33-34

For specific size advice please reach out to our customer care team, just like our bras, we're here to support you!

Unsure about your size?
We offer Australian customers FREE 30 day exchanges, so there's no risk to you.

Select your band size along with cup size to find the best fit.

Bralette Conversion Chart

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
DDD/F	2S	2S	2S	XL	2X	3X
G	2S	2S	3S	2X	2X	3X
I	3S	3S	3S		3X

Tip: If you are in between sizes or a size with two options, we usually recommend going the larger for extra comfort.

Measurements:

Body Size	6	8	10	12	14	16	18
Clothing Size	2	4	6	8	10	12	14
Waist	24-25.5"	26-27.5"	28-29.5"	30-31.5"	32-33.5"	34-35.5"	36-37.5"
Hips	34.5-36"	36.5-38"	38.5-40"	40.5-42"	42.5-44"	44.5-46"	46.5-48"

For specific size advice please reach out to our customer care team, just like our bras, we're here to support you!

Unsure about your size?
We offer Australian customers easy 30 day exchanges, so there's no risk to you.

Corset/Bustier Conversion Chart
Select your band size along the top, and cup size down the side to find the best fit.

UNDERWIRE SIZING

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

Under Bust Measurement (cm)

US Band	30	32	34	36	38
Under Bust	62-67	68 -72	73-77	78 - 82	83-87

For specific size advice please reach out to our customer care team, just like our bras, we're here to support you!

Underwear Conversion Chart (inch)

Body Size	6	8	10	12	14	16	18
US Size	2	4	6	8	10	12	14
Waist	24-25.5"	26-27.5"	28-29.5"	30-31.5"	32-33.5"	34-35.5"	36-37.5"
Hips	34.5-36"	36.5-38"	38.5-40"	40.5-42"	42.5-44"	44.5-46"	46.5-48"

Tip: If you are in between sizes, we always recommend going up a size for that extra comfort. We are true to sizes listed above but designs can vary slightly in fit.

For specific size advice please reach out to our customer care team, just like our bras, we're here to support you!

Please note that we do not accept back returns or exchanges on underwear bottoms due to hygiene regulations.

Unsure about your size? Visit our Size Guide for more information.

Sleepwear Conversion Chart

EU	34	36	38	40	42	44	46
US Size	2-4	4-6	6-8	8-10	10-12	12-14	14-16
	XS	S	M	L	XL	2X	3X
Hips (Inches)	31.5"	35.5"	39.4"	43.4"	47.3"	51"	55.1"

Tip: If you are in between sizes, we always recommend going up a size for that extra comfort. We are true to sizes listed above.

For the perfect fit, check your cm measurements to measure around your hips.

Unsure of your slip size or which fit to choose?
Our slips come in two styles designed for different levels of bust support and fit.

Non-underwire slips have a soft, unstructured bust for a relaxed, comfortable fit and can be chosen in your usual dress size.

Underwire slips feature built-in cups for added support, lift and shaping through the bust. For the best fit, we recommend checking your bust measurements and using the conversion chart below.

US BAND CUP	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

Tip: if you’re a size 28–32 with a G cup (or a size 32 with an F cup), try our new 3S. If the body fits but the cups are too small in an M, or the cups fit but the body is too big in an 34 or 36, we recommend trying a 2S or 3S.

Slip Conversion Chart (inch)

Body Size	6	8	10	12	14	16	18
US SIZE	2	4	6	8	10	12	14
Waist	24-25.5"	26-27.5"	28-29.5"	30-31.5"	32-33.5"	34-35.5"	36-37.5"
Hips	34.5-36"	36.5-38"	38.5-40"	40.5-42"	42.5-44"	44.5-46"	46.5-48"

For specific size advice please reach out to our customer care team, just like our bras, we're here to support you!

Measuring Your Cup Size

1. BAND SIZE: To measure your band size for a bra, wrap a measuring tape snugly around your ribcage just under your bust. Take note of the measurement in inches.

2. BUST SIZE: Find the fullest part of your bust. Make sure the measuring tape is level and wrap it around your bust. Note the measurement in inches.

3.Subtract your band size from your bust size measurement to determine your cup size.

Example: If your bust measurement is 34 inches and your calculated band size is 32 inches, the difference is 2 inches, which means you would be a B cup, making your size 32B.

DIFFERENCE IN INCHES	0	1	2	3	4	5	6	7	8	9
YOUR CUP SIZE	AA	A	B	C	D	DD	E	F	FF	G

Still Unsure? COMPLIMENTARY

Styling Appointment

Join us in our brand new NYC boutique in Soho for a complimentary, one-on-one bra fitting and styling session.

For more information, please call or text our store on +1 201-371-3021

NYC STORE

Extended Sizes

We’ve expanded our size range to ensure every body feels supported and confident. Our new 2S and 3X sizes offer the same signature fit, comfort, and quality you love, tailored for even more inclusivity.

Whether you’re seeking a smaller band or a fuller cup, we’ve got you covered.

RETURNS & EXCHANGES

Will it fit?

We know fit and comfort is important.

We recommend you order well in advance, so you can ensure the perfect fit. Enjoy fast shipping and we'll gladly cover the return delivery cost for size exchanges and returns for store credit, Australia-wide.

LEARN MORE

Delani wears a size S top and S bottoms and Tay wears a Size L top and M bottoms

Paris wears a size XL top and XL bottoms

Best Sellerpersonalise me

Olivia Slip Espresso

$120

Best Sellerpersonalise me

Milly Underwire Slip Ivory

$120

Best SellerNew In

Mae Set Ivory

$130

Best Sellerpersonalise me

Isla Slip Ivory

$120

Best SellerNew In

Isla Set Ivory

$120

Best SellerNew In

Jean Set Rhubarb

$120

Best Seller

Maverick Set Red

$90

Best Seller

Sofia Set Cornflower

$105

Kat the Label acknowledges and pays respect to the Wurundjeri Woi Wurrung people of the Kulin Nation, the Traditional Custodians of the lands on which we live and create. We pay respect to their Elders past and present, and to all Aboriginal and Torres Strait Islander people.

Measure with confidence

Size Guide

Size Guide

Measuring Your Cup Size

Still Unsure? COMPLIMENTARY

Styling Appointment

Extended Sizes

extended size

Introducing 2S & 3S

RETURNS & EXCHANGES

Will it fit?

Start Your

Wishlist

When should we send your message?

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X

US	28	30	32	34	36	38
AA	XS	XS	XS
A	XS	XS	XS	S
B	XS	S	S	M
C	S	M	M	M	L
D	S	M	M	L	XL	2X
DD	2S	2S	L	XL	XL	2X
E	2S	2S	2S	XL	2X	3X
F	2S	2S	3S	2X	2X	3X
G	3S	3S	3S		3X