This wasn't my first Champion bra, it's more like my tenth!  I'm a runner and my regular bra size is 36 C.  I like compression type bras, but because of a tricky shoulder I need a fitness bra that's easier to get on and off - this fits the bill.  This type of bra is so comfortable, it's not unusual for me to wear them all day on the weekend.  Bottom line is, when I run, this bra gives me the support I need and the girls don't move or bounce.  I get a Large in this bra because the Medium is just a little too tight for comfort and I dry them in the dryer so over time they draw up a small bit.