Britney Spears Debuts Her New 'Do

Britney Spears has crossed over to the dark side - when it comes to her hair that is!

The pop princess was spotted Monday being dropped off at the swanky Mondrian Hotel in West Hollywood, sporting a new 'do.

Brit dared to dye, changing her hair color dramatically from the blonde she was last seen with to a new dramatic dark brunette hue.

Brit tried to sneak into the hotel unnoticed, maybe hoping her new hair color would act as a disguise - but no such luck - we would recognize those pink booties anywhere!