Wife and I were at a Boston Red Sox game in the summer of 2006. Wife had on a white cotton shirt...no bra. it was about 95 degrees and humid. Well wouldn't you know it the rain came and came and came. Before we could get out of the bleachers we were soaked. Guys were looking at us. I looked at her and it was like she had no shirt on at all.
Her perfect 36C's were there for all to see. Once she realized it she quickly got out the hand/arm bra. We eventually got down to get covered and she found another dark shirt to buy and put on. It was pretty entertaining for all around us.