Britney Spears proudly posted footage of her 3-year-old niece Maddie doing a cover of her "Femme Fatale" bonus track on YouTube. "OMG! Check out my niece Maddie covering Aunt Britney's Up N Down. Sooooo adorable!" read the message attached to the video.

"The beat just dropped and the room got sexy," the little girl belted out her aunt's lyrics while playing a Barbie doll. "You're watching me [like] there's no one else around/ I know [you want me like] kids want candy/ [So keep watching me go

Video: Britney Spears' Little Niece Covers Her Song