Music Rihanna Releases Rehearsal Video for Diamonds Tour By Raphael Chestang 10:25 AM PST, March 4, 2013 YouTube Just four days away from launching her Diamonds World Tour, Rihanna is giving fans a sneak peek of what they can expect in a new rehearsal video.RELATED: New Music Releases In the video, the Stay singer dances to her newest single, Pour It Up. One of RiRi's choreographers described the routine as "stripper slash hood choreography."The world tour kicks off March 8 at the First Niagara Center in Buffalo, New York and ends on July 28 in Helsinki, Finland. Her last album, Unapologetic, is available now. Check out the video above!