LuLulemon Pink White Micro Stripe Racer Back Tank Top There is no sizing information - I estimate this to be a Size Small or a Size 2/4 Measurements (laying flat and approximate): Armpit to Armpit 13"; Armpit to Hemline 18"; Width of top along front hemline 16.6" There is a 1 inch run on hem where the stitching has come loose (see pictures)