I am a 32DD with a medium build, & I ordered a size medium. It is a little tight but provides the right amount of support without simply squashing my chest into the usual sportsbra uniboob. Also does not create any unflattering lines on the back or around the arms. Material is nice too, I ordered a second one in another color :)Love the color and fit, interesting back design.Looks cute until you start sweating...'cause the fabric isn't sweat-wicking, and you end up walking around with wet spots in armpit area.I got a small. I am a 34” C. 115 pounds 4’10”and this was very snug! At the end of the day I cannot wait to take it off. It smashes the girls down well for running or working out. The cup size was comfortable but around the under boob is tight.Fits a tad snug. I am 5’11 160 lbs very small chested. I usually got a medium in everything. I was just a little too tight for my liking. But it’s a very nice bra!Gorgeous color (red), gorgeous style. Ordered my normal size (large) and it was a workout in itself trying to pull it on. Boob spillage on the sides, and no stretch whatsoever. That said, it is cute if you can tuck the girls in. I'd order again, but a size up.First let me say I think this sports bra is very pretty. The color is gorgeous & it makes me want it in other colors as well. I love the straps in the back, so cute! So far I haven’t worn it to workout in, I don’t think it would offer enough of the support I would need. I wear 38c & so I don’t think it would offer support for running on treadmill or anything. I have worn it as a bathing suit top & that works really well. Overall, I’m happy with it, it’s cute, the quality seems to be there. Just for working out I’m not sure for bigger chested women that it would work. I ordered a L, I wear a 38c, & I’m 175lbs.It is so comfortable that I didn’t want to take it off! Very flattering. Had to order a size up.The fit is great. Good coverage and very comfortable. The color is bright and I love it