Britney Spears Tour Preview!

Footage form the rehearsals of Britney Spears’ ‘Femme Fatale’ tour has appeared online.

The clip which was uploaded to YouTube shows the singer performing new track ‘How I Roll’ supported by a group of dancers

Spears's tour kicks off her U.S in Sacramento, California on June 16.  It is still yet unknown whether the show will hit the U.K following her stateside stint.

Watch the rehearsal footage below: