I don't know how much help this will be because I just ordered my first sports bras that should be here this coming week. My game plan is a T shirt under a loose fitting dark shirt. How well will this work? I can't say just yet but I have little choice but to find out, it's either that or continue jiggling and bouncing. I did look for bras with no clasps, snaps and as little in the way of seams as I could thinking that would help.