As a general rule of thumb, buy ONE SIZE LARGER than your pant or dress size.
Your measurements should fall in the center or the lower side of the measurement range. If your measurements fall in the higher side of the range, you may find that size too snug on you. It is better to have a swimsuit that is a little bit looser than you need, rather than too tight! Please note that these are rough guidelines only.

Size
 bust
 Waist
 Hips
 Torso
6
 34
 26 1/2
 36 1/2
 59 1/2 - 60 1/2
8
 35
 27 1/2
 37 1/2
 61 - 62
10
 36
 28 1/2
 38 1/2
 62 1/2 - 63 1/2
12
 37 1/2
 30
 40
 64 - 65
14
 39
 31 1/2
 41 1/2
 65 1/2 - 66 1/2
16
 40 1/2
 33
 43
 67 - 68
18
 42 1/2
 35
 45
 68 1/2 - 69 1/2
18W
 44 1/2
 36 1/2
 47
 66 /14
20W
 46 1/2
 38 1/2
 49
 68 /14
22W
 48 1/2
 40 1/2
 51
 70 1/4
24W
 50 1/2
 42 1/2
 53
 72
26W
 52 1/2
 44 1/2
 55
 73 1/2
measurements
*Certain styles have a different fit and are noted accordingly on the individual product pages.