Britney Spears Posts Video of Son Shaking His Groove Thing Watch It!

Britney Spears Britney Spears' dancing genes must run in the family. In a video the singer posted on her official YouTube page, her son Sean Preston shakes his groove thing for the video game Just Dance - and the 6-year-old has moves! (His father Kevin Federline was also a dancer.) Britney Spears Is Engaged Best moment? When he pushes his brother Jayden, 5, out of the way. Watch the video below: