Rihanna: “I Want to Spank” Britney Spears

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 Jean Baptiste Lacroix/WireImage; Michael Buckner/ACMA2011/Getty

Rihanna and Britney Spears aren't afraid to get kinky.

At her fans' request, the 22-year-old Barbados-born singer asked the pop star, 29, to collaborate on an "S&M" remix — and Spears obliged.

"In order to do a remix, it had to be major," Rihanna said during a Monday radio interview with Z100's Elvis Duran and the Morning Show. "I asked my fans last week who they wanted me to collaborate with, and Britney was one of the most popular names."

Will the pop divas shoot a video for the racy song? "I hope so," Rihanna said. "I want to spank Britney."

The track marks the first time Spears has been featured on another artist's song — something Rihanna appreciates.

"It's very strange. Britney never does features," Rihanna said. "She really liked the song to begin with, but it was a different story when she had to sing it, and she really wanted to be a part of it."

"It made it really special," she concluded, "because you never see two pop female artists doing songs together anymore."

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