Britney Spears BELTS Rihanna’s ‘Unfaithful’ in New Video

Britney Spears may have collaborated with Rihanna on their #1 smash ‘S&M,’ but it was another RiRi song she had on the mind in her latest Instagram video.

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Putting her powerful pipes to unique use, Spears shared a clip of herself delivering a soaring rendition of the Bajan belle’s 2006 hit, ‘Unfaithful.’

What are you waiting for? Check it out:

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With Spears’ interesting offering already sparking much debate on social media, what are…