David Arquette Parties, Celebrates the Birthday Girls of 90210

“90210” stars Shenae Grimes and Jessica Stroup celebrated their birthdays at Beacher’s Madhouse in Los Angeles on Saturday, with a vaudeville inspired soiree, resplendent with sassy stockings and feather boas.

Beacher’s, the all-new venue at the Roosevelt Hotel, is set to officially open in early 2011, and is co-owned by David Arquette and Jeff Beacher.

Stroup and Grimes went all out in full costume; at one point, owner David Arquette led the crowd in singing “Happy Birthday” as Shenae and Jessica were presented with a giant birthday cake. The birthday girls also received new Samsung Galaxy S phones, among other presents…I mean, what’s a birthday party without your friends and presents, after all?

Also in attendance: Brittany Snow, Paris and Nicky Hilton, (fresh from the Carousel of Hope Ball) Brandon Davis (ditto), and fellow “90210” co-stars AnnaLynne McCord, Ryan Eggold, Trevor Donovan, Michael Steger