R&B sensation Rihanna is currently prepping her forthcoming North American summer tour with two of music's hottest acts. The 'Rude Boy' songstress has reached out to the likes of chart topping pop singer Ke$ha and Lil Wayne's protégée Nicki Minaj for the 'Last Girl On Earth Tour.'

The Live Nation-produced trek will feature the young females performing across 25 cities beginning July 2 at the White River Amphitheater in Seattle and concluding on Aug. 25 at the United Center in Chicago.

Longtime Rihanna fans can expect the Grammy Award-winner to set the bar high for her highly anticipated headlining tour, in which she promises will be a "massive production."

"We've never done a tour to this capacity," she recently revealed to AOL. "The production is unbelievable and the costumes, we just took it to a whole new level. Visually and sonically it's going to be a big step up from the last time. We just keep growing and this time it is a massive production that I cannot wait for."

Before the earth's last set of girls hit the road, Rihanna will head overseas on April 16 to begin her European trek in addition to performing on 'American Idol' on April 7.

Tickets for the 'Last Girl On Earth Tour' go on sale beginning April 9.

Below are list of confirmed tour dates and cities for the 'Last Girl On Earth Tour':

Jul 02: Seattle
Jul 04: Vancouver
Jul 06: Calgary
Jul 09: Sacramento
Jul 10: Mountain View
Jul 14: Albuquerque
Jul 15: Denver
Jul 17: Las Vegas
Jul 21: Los Angeles
Jul 22: Phoenix
Jul 28: Atlanta
Jul 30: Tampa
Jul 31: Miami
Aug 03: Indianapolis
Aug 05: Toronto
Aug 07: Montreal
Aug 08: Boston
Aug 11: Uncasville
Aug 12: New York
Aug 15: Wantagh
Aug 18: Camden
Aug 20: Bristow
Aug 21: Hershey
Aug 22: Detroit
Aug 25: Chicago