LOL I've seen this before, why in the hell would you run barrel in a strapless? I have enough issues sitting down and eating dinner in a strapless!
Although I have to say, I've seen girls get so forward coming out of barrels that they've snagged their bra or their shirt on their saddle horn, and I've done it too. I've never torn my shirt, but I coulld see it happening easily. So, I always wear my nicest Victoria Secret to races!
I knew a girl who was team roping, she somehow caught her shirt swinging her loop and pulled her shirt AND bra up....Hehe.
Funny how that works...