Serving bangs and an adorable smile, little Maddie Aldridge is nothing but a dead ringer for her aunt Britney! Maddie, who is the daughter of Britney's younger sister Jamie Lynn, was snapped backstage playing dress-up on Friday evening, apparently helping Spears prepare for another of her Piece of Me performances at Planet Hollywood in Las Vegas.Britney shared the photo via Twitter and Instagram, showing the world how much of a family girl she really is.