Ashlee Simpson has a really BIG mouth!

After months of posing for pics wearing Ken Paves 2-foot-long hair extensions, her nifty refined nose, more-prominent chin and now-trademark insipid smirk, Ashlee Simpson finally managed to pry open her mouth at last night's Hornitos launch party  in Hollywood. And what a surprise!

Yikes, this babe is packing some major molars. Who knew such a little girl could have such a wide mouth? If she were a whale, she could live for months off a mere mouthful of plankton.

Photo credits: FilmMagic