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Jenna Dewan, WhoSay **please include posted via his WhoSay page

WhoSay/2012 Jenna Dewan-Tatum

So, do blondes really have more fun?

Jenna Dewan Tatum posed that question Monday. The actress posted a picture to her WhoSay page showing off her newly lightened locks. "About to find out :)" she wrote.

But Channing Tatum's wife isn't playing with peroxide just for fun. "Oh, and the new hair is just for a role guys...started a new movie today:)," she clarified on Twitter Tuesday.

Jenna's gorgeous as a brunette, but we're liking the platinum tresses! Somehow we think though this lady would look lovely with any hairdo.