Britney Spears Rehearses ‘How I Roll’ for ‘Femme Fatale’ Tour

With her 'Femme Fatale' Tour set to kick off in just a few weeks, Britney Spears has hit the rehearsal studio to start mastering some choreography with her dancers. In this video, she's learning to groove to the track 'How I Roll.'

The much-anticipated 'Femme Fatale' Tour -- which boasts guest-star Nicki Minaj -- launches on June 16 in Sacramento, Calif., and now we've got a slight idea of what to expect from Britney's performance. From what we can tell, the 'Till the World Ends' hitmaker is fresh and energized as she rocks 'How I Roll,' dancing above her backup movers and even getting a free ride on a rolling cart.

Up until recently, we had some understanable concerns about whether Britney might be losing her dance luster. We really hope this peppy version of the pop icon is here to stay -- at least for the summer -- because we're looking for a rocking tour.

While she's out on the road, Britney will maintain a strict diet of health food and Michael Jackson songs, and will keep a humidifier nearby to keep her voice in tip-top shape.

Watch Britney Rehearse 'How I Roll' for Tour