January Jones is well known for her icy blonde locks -- they're the calling card of her "Mad Men" character Betty Draper. But just today, January was spotted sporting a head full of red hair -- with long red extensions, even. Is she trying to cut in on Christina Hendricks' trademark look? What do you think of her new red look?
And while we're here, let's play a little game. With red hair all the rage in Hollywood -- from Christina Hendricks to Julianne Moore to Lindsay Lohan -- would you be surprised to learn that many of these famous manes came from a bottle? Keep clicking through this slideshow and see if you can guess whether each star's carrot top is for real -- or totally fake.