Plenty of celebrities have experienced the magic of Disney's Mary Poppins, and former Girls Next Door star Holly Madison is the latest famous name to fly into the New Amsterdam Theatre. Madison, who now headlines her own E! reality series Holly's World and Las Vegas burlesque spectacle Peepshow (both alongside Disney's Tarzan veteran Josh Strickland), paid a visit to the practically perfect nanny on January 19. After the performance Madison joined Mary and Bert (Laura Michelle Kelly and Gavin Lee) for some photos. Click on below!