LeAnn RimesLeAnn Rimes showed some serious skin during her sexy performance on 'America's Got Talent' Thursday night. Wearing a retro, navy blue bikini, the singer straddled a male dancer before singing her hit song, 'Swingin'.'

Before the show, Rimes tweeted, "Dress rehearsal! Lots of tape to make sure I stay in my bikini. Doing a lot of flipping! First time ever performing in a bikini! Fun!"

Her boyfriend, Eddie Cibrian, couldn't contain himself. "On my way down to see @leannrimes perform in a hot itsy bitsy teenie weenie bikini on AGT!" he tweeted.

Watch the sexy video after the jump. >>