Britney Spears turns 25

After a day of fun with her kids, Spears started the night off at Mr. Chow's with some pals and her manager, Larry Rudolph reports PerezHilton.

Around midnight Britney Spears was joined by new BFF Paris Hilton and Fergie at a LA hot spot.

Paris, Britney and Fergie sat in a corner table, taking over the whole room.

"The three of them seemed to be having a great time," one eyewitness tells Perez Hilton. "Though there's rumored to be some friction between Britney and Madonna, there wasn't any last night when the DJ played Holiday and the girls went crazy!"

Last week, Pop babe Britney Spears partied with Hollywood's young A-listers at Area , Nov. 30 - including Justin Timberlake who pulled up to the L.A. hotspot with a pretty brunette reports Star Magazine.

While the former 'N Sync singer partied on one side of the nightclub his ex-girlfriend Britney Spears was hanging out on the other with group of male dancers wearing her wedding band.

An eyewitness tells Star, "Spears was having a grand old time drinking a cranberry cocktail and smoking cigarettes."

"But what was even weirder," a source tells Star, "Spears' newest best friend Paris Hilton was sitting at the very next table and yet the two never spoke."