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Now this is what we call a collaboration.

Two superstars of pop, Rihanna and Britney Spears, have teamed up for a remix—excuse us, "RIHmix" of Ri-Ri's already smash (and sexy) hit "S&M." Just seems greedy, right? All that hotness in one song?

In addition to adding her breathy tones to the chorus, Britney also contributes an all-new verse to the hit, cooing about her own bad-girl ways.

The single, released through New York's Z100, was first teased by the duo over the weekend, when Rihanna tweeted, "I got a #SEXY collabo comin your way supa dupa soon!!!! OH YEAH!!! By popular demand…"

Britney quickly replied with, "You're such a tease! I like it, I like it…" And so do we.