Photos of Ashlee Simpson, Heidi Montag, Lauren Conrad, Paris Hilton at Sidekick Launch Party
The Celebrities Bring Their Sidekicks and Phones Out to Party

It was couples' night for a handful of stars at T-Mobile's Sidekick LX launch party in LA yesterday. Pete Wentz took a break from his tour to reunite with Ashlee Simpson, who tweeted about how great it was to see DJ AM and Travis Barker together. Doug Reinhardt came attached at the hip with Paris Hilton as usual, and two of his exes, Lauren Conrad and Amanda Bynes, were both celebrating as well. Heidi Montag updated her status excitedly all night long while her unrealistic rap star husband Spender Pratt took a break from fielding calls after posting his phone number on Twitter. Kristin Cavallari is ready to spice up The Hills, but last night the show's original girls were perfectly red carpet ready.

To see more photos including Kim Kardashian, Nikki Reed, Adrian Grenier, Anna Faris, and many others just


Images include: Amanda Bynes, Anna Faris, Ashlee Simpson, Brittny Gastineau, Doug Reinhardt, Emmy Rossum, Heidi Montag, Kim Kardashian, Lauren Conrad, Mark Hoppus, Paris Hilton, Pete Wentz, Rashisda Jones, Weezer, Spencer Pratt, Blink182, Adrian Grenier, Carey Hart, DJ AM, Kelly Osbourne, Madeline Zima, Michael Johns, Nicky Hilton, Nikki Reed, Taryn Manning, Travis Barker


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