This really might be an overshare but heck, I've never had any shame in my game, why would I start now. This is hands down the BEST sports bra I've ever ever ever owned.
Seriously. I'm a big chested gal and in the past I've never felt comfortable running or jumping if not for the self conscious factor than simply for the reason that it HURT.
I got this bra and it's my new best friend. Seriously. It keeps everything in place and since it's a racing back style I never have to worry about straps falling down. Now I can run and jump and do whatever I need to do without concern of pain from floppy boobs!