Watch This! Maddie Covers Aunt Britney's "Up N' Down"

Proud auntie Britney Spears caught her adorbs niece Maddie singing her, er, provocative hit "Up N' Down". It's super cute, but a little weird to see a three-year-old sing the word "sexy". Although, her Barbie doll clutched in her hand definitely adds to the innocence!

~ A.H.