Jennifer Lopez steals the show with her famous derrière on a star-studded American Idol

The night belonged to Scotty McCreey, but even his performance vote winner could not compete with the charms of Jennifer Lopez.

With her ​​husband Marc Anthony interpretation, the judge of American Idol took the supporting role of a dancer, shaking her body in a revealing white dress with ruffles mini.

As she writhed around her smiling husband, Jennifer has unveiled its famous behind a pair of fishnets.

She then shook her booty to the camera for 15 seconds while Anthony watched in adoration.

The couple, who have been married for seven years, sharing a passionate kiss on stage afterwards.

Anthony then whispered something to his wife's ear and she smiled widely before putting his hand over her mouth to silence him.

Jennifer, 40, was one of many celebrities enjoy watching millions to promote their latest offering.