I'm 5'6", 125 lbs, wear size 2 or 4 normally, and small or extra small. 34b bra. i tried on size 2 and it fit great. this dress rocks! i live the soft material and side pockets. not a lover of a line skirts, but this one is subtle. i do need a strapless bra, but if you are more endowed than me, you won't need it. the hem is unseamed, leaving it a bit edgy. since the denium is light i can wear ghis dress now and into summer. i live in texas so probabley won't be wearing it after june. covering my