Nicole Richie [1] pulled out all the stops when she competed against John Michael Higgins during Thursday night's Lip Sync Battle [2]. While her Great News costar performed a groovy version of Tom Jones's "It's Not Unusual" (complete with the world's tightest pants), Nicole really stole the show with her Marky Mark impression. Singing "Good Vibrations" by Mark Wahlberg [3]'s hip-hop group, Marky Mark and the Funky Bunch, she threw it back to the '90s with a muscle t-shirt, baggy jeans, and a lot of pelvic thrusts. We definitely think Mark would be proud of those moves.