It looks like Britney really is putting in the work during those "intense" dance rehearsals. She really wants the world to know she's back in action when her two-year Vegas residency kicks off in three days time. In the past, footage from her intense dance rehearsals never seems to match what we see at her shows, so I hope she somewhat delivers this time around. We also get to see her juggling motherhood and a new relationship while promoting a new album. Check out the entire documentary inside.
