Riri, Nicki and Ke$ha on tour together

Rihanna, Nicki Minaj and Ke$ha on the road together! Rihanna’s solo tour kicks off April 16th in Antwerp, Belgium, but in the U.S. and Canada, she, Nicki and Ke$ha will perform 25 dates for the “Last Girl On Earth Tour.”

Tickets go on sale Friday (Apr 9)  and the tour will open July 2nd in Auburn, WA. The three ladies will be making stops in Los Angeles, Atlanta, Boston, New York City, Chicago, Las Vegas and more.  Now thats an interesting mix...Miss Riri, Nicki and Ke$ha, sh ejis has this 'club' look 24/7 whats up with that?