Christina Hendricks, Kim K and Hilary Duff Get Hair Makeovers

Kim Kardashian, Hilary Duff and Christina Hendricks all debuted new 'dos!

Christina Hendricks lightened her signature locks and shifted to a shade blonder, thanks to her friends at Clairol Nice'n Easy. The “Mad Men” star told “Extra's” AJ Calloway that she was “born blonde,” but has been a redhead since her teens. The sexy star said the change in hair came after the show ended and she moved to New York. “Things are changing in my life, and it's time to shift to a new color,” she told Calloway. “Go back to blonde, it's been fun.”

So, do redheads or blondes have more fun? “It's been two days,” Hendricks revealed to Calloway. “I'm still figuring it out. I'm going to go out on the town, and report back to you.”

Next month will see the premiere of the final season of “Mad Men,” and it's the last time Hendricks will play the fiery redhead Joan, so her hair color shift couldn't have come at a more perfect time.

Did our favorite new blonde go back to the dark side? Just a few weeks after Kim Kardashian went platinum blonde, it seems she might be going back to basics. Or did she? Kim's makeup artist and close friend Mario Dedivanovic shared a photo on his Instagram of the reality star from the back with the caption, “Brunette vibes today on set. Guess who?” The image could be all in fun, or the “Keeping Up with the Kardasians” star might be test driving a new 'do too.

Is Hilary Duff feeling blue after soaking up too much sun? She's not, but her hair is. Duff took to Instagram today with a photo of her new teal locks, saying, "@Ambahhh turned me into a mermaid last night ... love all u girls @riawnacapri @nikkilee901 @ninezeroone xx." This comes just days after the hot mama posed for a sexy bikini selfie and shared the snap on Instagram.