The actress shared an instagram story on friday showing off her new haircut, a platinum blonde bob to celebrate her 46th birthday.

Webjanuary jones is starting 46 with a new hairdo!

An edgy pixie cut.

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Webjanuary jones' signature style is about as iconic as her character in mad men, betty draper.

Webthe mad men alum recently unveiled a dramatic hair transformation:

Webjanuary jones stuns fans as she reveals dramatic hair transformation inspired by her childhood on instagram.

Major celeb hair transformations of the past!

Whether they dye their locks are surprising new shade, lighten up a bit or just slip into a wig, these stars know how to switch.

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