Please refer to size chart in the description and refer to this diagram when taking your measurements:

Bust Measurement
Measure across the back and fullest part of the bust (not under the bust).

Waist Measurement
Measure across the narrowest part of the natural waist. Bend to one side to find the natural waist.

Hip Measurement
Standing with feet together, measure at the fullest part of the hip.

In the case that a style does not yet have a size chart, please refer to standard sizing below:

XS = 6 - 8 
S = 8 - 10 
M = 10 - 12 
L = 12 - 14