Sizes range from 0-3.5
0 is 4/6
05 is 6/8
1 is 8/10
1.5 is 10
2 is 10/12
2.5 is 12/14
3 is 14/16
3.5 is 16/18

that's the way Florida Chicos sizes their clothes and same deal in Santa Monica CA - which has great store on Montana - they have great travel clothes - I find BIG difference in selections state to state -