Go down from your nearest street size/ mall size (Examples: 12 in America Eagle wear a 11 in JB. If you're an 18 in American eagle, you'll wear a 16W in JB)
Tammy is a size 6 in American Eagle and a size 5 in Judy Blue
52.2% Cotton 23.4% Polyester 21.5% Rayon 2.9% Lycra