Britney Spears, Ke$ha, Nicki Minaj to remix 'Till the World Ends?' Singers tweet a countdown

britney-spears-till-world-ends.jpg Britney Spears and Ke$ha have sent their fans a semi-cryptic message on Twitter and if our hunch is correct, "S&M" won't be the only Brit-Brit remix to hit the airwaves this month.

Photo/Video credit: Britney Spears