Meghan McCain, daughter of Sen. John McCain, arrives at Perez Hilton‘s 31st birthday party (Matt Sayles / Associated Press)
Aubrey O’Day arrives at Perez Hilton‘s 31st birthday party held at The Viper Room in West Hollywood. (Angela Weiss / Getty Images)
“High School Musical” and “The Suite Life with Zack and Cody” actress Ashley Tisdale shows up at the Viper Room for Perez Hilton‘s birthday shindig. (Angela Weiss / Getty Images)
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Emmy Rossum shows up in silver to Perez Hilton‘s 31st Birthday Party in West Hollywood. (Angela Weiss / Getty Images)
The other talked about Hilton (Paris) and Doug Reinhardt arrive at Perez Hilton‘s 31st Birthday Party held at The Viper Room. (Angela Weiss / Getty Images)
Kim Kardashian, Britney Gastineau and Lacey Schwimmer pose outside The Viper Room in West Hollywood where they plan to celebrate Perez Hilton‘s 31st birthday. (Angela Weiss / Getty Images)
Heidi Montag and Spencer Pratt arrive at The Viper Room for Perez Hilton‘s 31 birthday bash. (Angela Weiss / Getty Images)
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Actress Tara Reid arrives at Perez Hilton‘s West Hollywood birthday soiree. (Angela Weiss / Getty Images)
Singer Christina Aguilera and Perez Hilton pose with backup dancers at the blogger’s 31st Birthday Party in West Hollywood. Aguilera belted her version of Marilyn Monroe‘s sultry birthday serenade to President John F. Kennedy. (Matt Sayles / Associated Press)
