Someone alert the FCC: LeAnn Rimes' sexy performance on America's Got Talent was anything but family-friendly!

Clad in a retro navy blue bikini, the 28-year-old singer straddled a male dancer as she belted out her hit song "Swingin'" on Thursday's episode.

The day prior, Rimes hinted she would be showing off some serious skin -- but she kept the details of her scandalous dance routine a secret.

"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!" she Tweeted.

Though Rimes' bold dance moves shocked some, her boyfriend Eddie Cibrian was clearly impressed.

"@leannrimes baby u were kick ass!!" the former CSI: Miami actor, 37, Tweeted after the show.

Tell Us: Was LeAnn's performance too sexy for America's Got Talent?