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Introducing your new April O'Neil!

The new "Ninja Turtles" movie started filming this week -- and Megan Fox looks ready for action.

While producer Michael Bay hasn't officially confirmed that Fox is playing the intrepid reporter, her brand new locks definitely give it away.

The actress was spotted at LAX on Thursday with her usually dark brunette hair dyed a new shade of red.

And who else has red hair? This girl:

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It was announced this week that Will Arnett has joined the cast, along with Alan Ritchson as Raphael, Pete Ploszek as Leonardo, Jeremy Howard as Donatello and Noel Fisher as Michelangelo.

The movie, which will be directed by Jonathan Liebesman, is expected in theaters in 2014.

What do you think of Megan's new hair? See how she's totally transformed herself through the years in the gallery above.

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