RihannaAs Rihanna prepares to launch her 'Last Girl On Earth' tour across North America this summer, the 'Hard' singer has allowed PopEater to take a backstage glimpse into her tour rehearsals.

With hot dance moves, costume changes and moving sets, Rihanna proves she's still hard at work perfecting the spectacular stage show for her fans. The set list includes new hits like 'Rude Boy' as well as fan favorites like 'Take a Bow.'

The tour, which features Ke$ha, starts July 2 in Seattle and will wind up in Chicago on August 25. (Check out her full list of tour dates.)

Watch Rihanna's Behind-the-scenes 'Tour Rehearsal' video: