YES!!! For the first time in my life I can wear ONE bra for a high intensity workout or run. I have a smal back (32) and huuuuge cup (JJ) and iv always had to wear two or three bras: one to keep my boobs apart, one to keep the up, and one to keep them still. This one bra does it all! It gets a little slack during the workout but I still run comfortably with it and don't have to feel my boobs flying all over the place. It keeps my side boob inside, its not excessively tight, and just no spillage anywhere. Its amazing, comfortable, and keeps it all together. Ill be purchasing more to wear for everyday.