Bikini

Top

 XS  S  M  L
Bust(in) 30-32 32-34 34-36  36
Cup AA-A B-C C-D DD - E
UK 6-8 8-10 10-12 12-14
 

Bottom

XS  S  M L
Waist(in) 26 28 30 32
Hips(in) 34 36 38 40
UK 6-8 8-10 10-12 12-14
 
If you prefer more coverage, please size up

One Piece

XS S M L XL
 UK 6-8 8-10 10-12 12-14 14-16
EU 36 38 40 42 44
US 2-4 4-6 6-8 8-10 10-12
Bust AA-B B-C D-DD E F
Waist 26 28 30 32 34
Hips 34 36 38 40 42

International Size Chart

 XS S M L
UK 6-8 8-10 10-12 12-14
EU 36 38 40 42
US 2-4 4-6 6-8 8-10