gone back to black ... or is that grey?

On Wednesday, the singer showed off her noticeably darker tresses in a series of TwitPics. The 25-year-old has been rocking a blonde weave for the last few months, so it looks like she's finally gone back to her more natural roots.

RiRi even has a new name for her new hair -- "Brr." In one of the snaps the "Diamond" singer tweeted, "New color ice greyish, call it #Brr," and on another picture she wrote, "Grey is the new black! Blondies, it's quiet for y'all."

Not sure if we would call the singer's new hair color grey, but it's definitely not blonde anymore!

How do you think Rihanna looks? Tell toofab in the comment section below, and click "Launch Gallery" above to see more stars with blonde and brunette hair and RiRi's sexiest TwitPics!

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