Holly's World Cast: Neon Trees Performance

Laura Croft, Holly Madison, and Angel Porrino attended a performance by rock band Neon Trees at a charity masquerade ball benefitting Music Saves Lives at The Beatles Revolution Lounge at the Mirage Hotel & Casino early October 28, 2010 in Las Vegas, Nevada.

Credit: Zimbio

Photos by Ethan Miller/Getty Images North America

Whitney Port & Ben Nemtin: Rolling Stone Party

Whitney Port and her boyfriend, The Buried Life's Ben Nemtin, arrived at the Rolling Stone Hot Party at the Jet Nightclub at the Mirage Hotel & Casino October 1, 2010 in Las Vegas, Nevada. Also pictured, Jersey Shore's Sammi Giancola.

Credit: Zimbio

Photos by Ethan Miller/Getty Images North America

Holly Madison: Rolling Stone Rockstar Weekend

Holly Madison appears at the Rolling Stone's Rockstar Weekend Kick Off with Weezer Live at Bare Pool Lounge at the Mirage Hotel & Casino October 1, 2010 in Las Vegas, Nevada.

Credit: Zimbio

Photos by Ethan Miller/Getty Images North America