Top
 XS  S  M  L
Bust(in) 30-32 32-34 34-36  36
Cup AA-A B C D-DD
 
Please go off cup size as the new St Lucia has an adjustable back strap. 

Bottom
XS  S  M L
Waist(in) 26 28 30 32
Hips(in) 34 36 38 40
UK 6 8 10 12
US 2 4 6 8

We are working on making these bottoms larger next season, apologies.