Singer Christina Aguilera lip-synched her way through most of her performance Sunday (Jun 6) at the 2010 MTV Movie Awards, which aired live last night from Universal City, California.

Wearing a sparkly, crystal-studded bodysuit, complete with a cape and thigh-high boots, Christina performed a medley of songs taken from her newly released album Bionic, including “Bionic,” “Not Myself Tonight” and “Woo Hoo” (sans guest artist Nicki Minaj). And the absolute best part of her set was her flashing crotch! Sad, right?

Check out a few pics and video footage of Christina Aguilera’s performance at the MTV Movie Awards below and when you continue reading…