BRITNEY Spears and Rihanna kicked off the Billboard Music Awards in Las Vegas today with a racy live performance of their S&M remix - complete with pole dancing, a pillow fight and onstage smooch.

Britney Spears and Rihanna sealed their opening performance for the Billboard Music Awards with a kiss. Picture: Ethan Miller/Getty Imagesfor ABC
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Rihanna and Brit's pillow fight. Picture: Ethan Miller/Getty Images for ABC Getty Images