Rihanna announces dates for 'Last Girl on Earth' Tour, brings Ke$ha and Nicki Minaj along for the ride [Tour Dates]

Rihanna fans will be happy to know that they will be able to catch their favorite chick in concert when she embarks on her North American tour kicking off in July.

Ke$ha Slams Britney Spears' Lip-Synching: 'If You're Going To Be A Singer, You Should Sing'

There may have been shots fired here....

For those of you who are not familiar with Ke$ha she is the voice behind the hit pop single "Tik Tok." Because the song has been doing pretty well, she has gotten a little momentum and a boat load of media attention.

Clearly all of the attention due to her eccentric personality and persona encouraged her to sip on a glass full of truth juice, because she decided to get real about Britney Spears's lip-synching.

Britney, who has been lip-synching since the start of her career surprisingly unbeknown to many, has been under fire following a concert she performed in when her tour touched down in Australia.

Now, Ke$ha has something to say about it too, stating in a recent interview that if Britney Spears is supposed to be a singer she should sing and not mime.