This summer Rihanna is touring with her album 'Rated R' on her 'Last Girl On Earth' North American tour.
According to people.com, the 'Russian Roulette' singer will be joined by Nicki Minaj and Ke$ha.
The tour will include 26 stops, starting in Seattle on 2 July, and will have stops in L.A (21 July) and Madison Square Garden (12 August).
Tickets will go on sale on 7 April at LiveNation.com
Check out some snaps of RiRi...you think Nicki Minaj and Ke$ha will keep up?

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