jenniferlopeznippleslippicc.jpgJennifer Lopez can not escape the controversy surrounding her Zuhair Murad dress shown here to the left. Did she show nipple or not?

On Tuesday night's American Idol, judge Jennifer Lopez told the world, "There was no nipple!"

This was after Steven Tyler reenacted JLo's dress ... pulling his shirt aside to expose his left nipple.

Love that they have a great sense of humor!

Click thru to watch video of JLo defending her Oscar dress.