If it wasn’t fabulous enough that Rihanna will be touring this summer, it just go better with news that Ke$sha will be joining her.

This summer, will take her hit album Rated R on the road for her "Last Girl On Earth" North American tour. If anda are in the US atau Canada, anda will want to check out the tour dates and get your tickets ahead of time to catch one of her pumped up concerts.

The ladies, along with rapper Nicki Minaj, will kick it off in Seattle July 2, and make 25 total stops – including Los Angeles on July 21 and Madison Square Garden in N.Y.C. on Aug. 12 – ending August 25 in Chicago.

Rihanna and Ke$ha: what a winning combo, don’t anda think? We can’t wait to see them perform together.

anda can get tix online on LiveNation.com starting this Friday on April 9!