Britney Spears -- The Many Faces of 'The X Factor'

She may still be under an A-list conservatorship, but Britney Spears is definitely in charge of at least one thing ... making hysterical facial expressions on "The X Factor."

On last night's big premiere, the 30-year-old lip synching wonder's contorted eye, mouth and weave gestures said more about how she really felt about the contestants' performances than any of her actual critiques.

Although Britney's comments were surprisingly lucid, it was her awkward grimaces that stole the show.