Jon Kopaloff, FilmMagic
In the home movie, which was posted on Spears' YouTube page, the singer's young song Preston is parked in front of the TV, dancing his little heart out while playing the Xbox Kinect game Just Dance Kids 2. The tyke, clearly mesmerized by the interactive challenge, seems to have no clue his mommy is taping his every move.
Preston only takes a break from "getting his groove on" -- as Britney says with the video post -- to push his bro Jayden out of his way. Brothers will be brothers! Check out the cute and personal vid below. The kid is Britney's after all ... so you know he's an entertaining dancer!