After all the hullabaloo about Jennifer Lopez's wardrobe malfunction at the Oscars, which her rep flatly denied, the actress and American Idol judge addressed the alleged nip-slip on the show last night. As her co-star, Steven Tyler, teased her and even feigned a "reenactment" of the incident, Lopez set the record straight on broadcast TV. "There was no nipple!" she exclaimed. Some excited Oscar viewers thought they'd seen a little more flesh than Lopez intended to show while presenting an award in her skintight silver dress on Sunday night, though the actress and her rep maintain it was just a shadow. Still, a Twitter feed spawned by the incident continues to post updates.