Credit: WENN

Jennifer Lopez's nipple nearly stole the show at the 84th Annual Academy Awards while presenting with Cameron Diaz, 39 -- or did it?

Wearing a cleavage-baring Zuhair Murad gown, many wondered if the American Idol judge, 42, had an accidental nip-slip while co-presenting the Oscars for Best Costume Design and Best Makeup.

Lopez's stylist Mariel Haenn denied Lopez gave an inadvertent peep show during the telecast, tweeting: "The dress fit perfectly to her every inch. There were cups built in and there's no chance that there were any, how do you say? 'slips.'"

Added Haenn: "While the dress did give the illusion of sheer-ness, joke's on everyone who wishes they saw something! If you thought that dress was hot wait until you see what's next."

The "On the Floor" singer changed into another daring look by Zuhair Murad for the Vanity Fair Oscar party at Sunset Tower in West Hollywood, Calif. Lopez accessorized her plunging sequined gown with H Stern jewels and a Swarovski bag.

Tell Us: Are you convinced Jennifer Lopez stayed covered while presenting at the Academy Awards?