Hey Britney. They Say You've Already Lost Control.

They do. Seriously. HotelChatter was tipped off that Brit-Brit was partying all night Monday sans kiddies at the W Westwood and hooked up with a mystery man.

"She entered in a short black and white dress with long black wig," recounts one spywitness. Britney sure is fond of her disguises! Later on in the evening, Spears changed behind a screen at the bar into a men's white shirt and tiny black booty shorts. "Britney was making out with a dark hair, bearded man outside in a cabana, but i could not recognize him," says our mole. Then, after an amarous public makeout session, sources tell us that Spears and her mystery man went into the lobby and got a room for the night!! And, like a true gentleman, the fella was the one that gave his credit card to the reception desk.

Britney Spears Dumps Kids for W Westwood [HotelChatter]

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