Nicki Minaj was performing at this years Made In America Festival and apparently her boobs wanted to see what was going on because they fell right out of her top.
Nicki was in the middle of performing "Majesty" and while she was bouncing around on stage, the dress that she was wearing came down and fully exposed Nicki to the crowd. "Luckily" she was wearing pasties under her dress so it wasn't a total disaster. The pasties lead me to believe that she had some idea that this was a possibility and she was prepared for it.
Either way, she handled it like a champ, tucked herself back into her dress and kept on going.