dashnlotti - 2019-01-08 1:13 PM In my opinion/experience it has a lot more to do with the bra. I have had my boobs literally come OUT of my bra during a run bc I wasn't thinking and put on a cheap one LOL...thank goodness my shirt held together But a good bra that keeps the girls from moving allows me to wear whatever I want without being free entertainment. Plus it's much more comfortable without any bounce. Someone mentioned Shefit...I bought a used one to test and it's my go-to bra for competing. I'm not sure what their return program is like, but I suggest trying on first. Per their size chart and my actual bra size, I should be a L or XL, and I wear a Medium. My favorite thing is I can wear it comfortably loose when I'm not on my horse, then cinch 'em down tight before I get on!