Britney Pals Fear Pop Princess is Out of Control

“Extra” spotted Britney Spears and her two adorable sons, Sean Preston and Jayden James, as the trio bowed out of New York and headed to the Teterboro Airport Monday night.

The pop princess bid adieu to the city that never sleeps after turning Manhattan into her personal party zone.

“She's still needing to be carried out of clubs; she's always caught vomiting, most recently on herself in her SUV; the bottom line is Britney is a girl out of control,” dished Us Weekly's Katrina Szish.

Szish said it seems obvious that Britney's career has taken a back seat to her hard partying ways.

“On Grammy night she actually was in New York partying at a club called One,” Szish revealed.

Meanwhile, a fellow party goer at the club that night told “Extra” that Brit slipped out of a slinky red dress so she too could wear one of the go-go dancer's costumes.

“She called them over because she liked their fishnet stockings, and she wasn't happy with her outfit,” revealed Anna, a Britney confidant who asked us to protect her identity. “And the next thing I know, she's walking down the stairs with these dancers.”

Anna also revealed a lot about Brit's party habits: “She likes to drink champagne; every time I see her, she's got champagne in her hand. She was out almost every single night this week. I know she went to Tenjune alone four nights in the past week.”

Szish told us that Britney may have another reason to drown her sorrows after seeing pictures of her exes Justin Timberlake and Kevin Federline partying together.