S&M - Rihanna and Britney Spears - Billboard Music Awards 2011

Rihanna and Britney Spears perform 'S&M' at the Billboard Music Awards 2011

From Billboard:

Britney Spears and Rihanna kicked off the Billboard Music Awards in head-turning fashion Sunday night (May 22), with a racy live performance of their "S&M" remix complete with bejeweled handcuffs, pole dancing and a playful pillow fight.

Watch the video here: