Britney Spears jimmy kimmel Femme Fatale concert performance singer Britney Spears jimmy kimmel Femme Fatale concert performance singer

It's Britney, bitch!

There's no denying that Britney Spears knows how to get the crowd going nuts, and last night on Jimmy Kimmel Live, she proved it.

Wearing a semi-revealing black and green outfit, our girl hit the stage to perform three songs off her album Femme Fatale. Did she give it her all? Let's just say her hair and makeup looked fabulous!

Before the performance, the 29-year-old songstress showed her comedic side while taping a skit with Jackass stars Johnny Knoxville and Steve-O.

Quite the busy day for Ms. Spears. No doubt, sons Sean Preston and Jayden James are proud of mommy!

See Britney showing the crowd her firm backside ... after the jump.