Jason Kempin/FilmMagic

If there's one theme to Rihanna's red carpet style, it's that you never know what to expect!

From edgy tomboy to haute couture princess, every outfit is one fabulous fashion surprise after another.

It's anyone's guess what style the "Talk That Talk" singer will wear to the 54th Annual Grammy Awards this month, but you can bet it won't be boring!

Click through to see the 10 best looks she's rocked on the red carpet.

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