Please note sister sizing is only applicable for our tie-back swimwear or when sizing down in a clip back style. Sister sizing up a in a clip back is not suitable.

Did you know the majority of bra sizes have what is called a 'sister size'? This essentially means that there is the same volume of breast tissue in a cup, even when you have a different band (back) size (e.g your usual 10FF bra means you'll also fit an 8G or 12F).
This is also helpful if you are larger on the bottom half than the top half and want to buy a one piece. (e.g a 12E bust size and 14 brief would try a 14DD one piece).
Use the chart below to find out what your sister sizes are. All sizes on the same horizontal line are sister sizes. If you have a questions on sister sizing, please email info@marvell-lane.com

 

BAND SIZE

6

BAND SIZE

8

BAND SIZE 

10

BAND SIZE 

12

BAND SIZE 

14

BAND SIZE

16

BAND SIZE 

18 
CUP SIZE 6D
*
*
*
*
*
*
CUP SIZE 6DD 8D *
*
*
*
*
CUP SIZE 6E 8DD 10D
*
*
*
*
CUP SIZE 6F 8E 10DD 12D
* 		 
*
*
CUP SIZE  6FF 8F 10E 12DD 14D
*
*
CUP SIZE 6G 8FF 10F 12E 14DD
16D
*
CUP SIZE 6GG 8G 10FF 12F 14E
16DD
18D
CUPSIZE  6H 8GG 10G 12FF 14F 16E  18DD
CUP SIZE 6HH 8H 10GG 12G 14FF 16F 18E
CUP SIZE 6J 8HH 10H 12GG 14G 16FF 18F
CUP SIZE * 8J 10HH 12H 14GG 16G 18FF
CUP SIZE * * 10J 12HH 14H 16GG 18G
CUP SIZE *
*
* 		12J 14HH 16H 18GG
CUP SIZE *
*
*
* 		14J 16HH 18H
CUP SIZE *
*
*
*
* 		16J 18HH
CUP SIZE *
*
*
*
*
* 		18J

 * means that no smaller or larger Sister Size is available in our size range.