Onlookers say that Madison was left a little red-faced at Niche Media's Vegas magazine soiree at PURE nightclub when the top of her dress popped open in front of a group of high-brow guests.
"She was embarrassed but was humbly laughing about the whole thing," Fox News quoted a source as saying.
Meanwhile, the former girlfriend of Hugh Hefner is all set join former Spice Girl member Mel B on the raunchy musical 'Peepshow'. Madison, 29, has been trying to launch a solo career ever since she broke up with Playboy founder Hefner. 'The Girls Next Door' star has been given a role in which she is required to bare her breasts.
She will be joining Mel B as a replacement for Kelly Monaco on the show.