It happens quite often. A celebrity puts on a sexy low-cut dress that doesn't cover up quite as much as it's supposed to.
The actress was posing with her hairstylist friend Ken Paves when her billowing skirt got caught up in her heel. When Longoria bent down to untangle herself, she revealed a bit more of her breast than she intended. Nip slip alert!
Longoria wore a black Pucci gown with a large slit up the leg and a keyhole cut out on the bodice. Several cited her for "pulling an Angelina Jolie." Last year Jolie made headlines at the Oscars for flaunting her leg through the slit down the side of her black velvet gown. Longoria posed similarly on Sunday night (see video below).