Rihanna and Britney Spears shared a kiss as they performed together at the Billboard Music Awards in Las Vegas.
Spears appeared as a surprise guest during Rihanna's performance of recent single 'S&M' at the MGM Grand Arena.
Both dressed in bondage outfits, the pair dance around a strippers' pole before locking lips in celebration at the end of the song. You can watch the performance on Gigwise below.
The kiss echoed Spears' infamous on stage kiss with Madonna at the MTV Video Music Awards in 2003.
Spears also appeared again later in the ceremony during Nicki Minaj's performance to sing her new single 'Till The World Ends'.
You can see photos and the full Billboard Music Awards winners list on Gigwise.
Britney Spears and Rihanna - 'S&M':
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