“Girl Next Door No More” Holly Madison is taking on Sin City in her own TV speical.

The one-time Head Hunny in Hugh Hefner’s Harem of Hotties has moved out of the Playboy Mansion and is headed for Las Vegas in a new hour-long E! special, Holly’s World.

The special will shadow Holly as she tackles her role as the lead in Planet Hollywood’s burlesque extravaganza “Peepshow,” takes in the lush Las Vegas nightlife, and entertains a new love interest, the network said Tuesday.

Holly’s World premieres Dec. 6 on E!