Madison Attacks Hefner's Ex-Fiancee Over Pool Party

Hugh Hefner's ex-girlfriend Holly Madison has taken aim at the Playboy boss' runaway bride Crystal Harris for partying in Las Vegas on what was supposed to be her wedding day.

Hef's former fiancee - who jilted the publisher just days before the couple was to be married on Saturday (18Jun11) - was spotted living it up with reality TV star Heidi Montag poolside at Sin City's Wet Republic.

And Vegas regular Madison was far from impressed.

In a tweet, the former Playboy Playmate writes, "That's a new low... That's disgusting, and whoever booked her is tacky".