Blonde bombshell.

Valerie Bertinelli showed off a shocking hair transformation in an Instagram selfie that she shared on Monday.

In the photo, the actress, 65, smiled at the camera while donning blonde locks, writing, “New hair who dis?”

Bertinelli then added, “it’s a wig 🤭.”

She tagged celebrity hairstylist Chris Appleton, whose clients include Jennifer Aniston, Kim Kardashian and Jennifer Lopez.

Appleton, 42, commented on the post, “What a stunner 😍.”

Bertinelli got more compliments on her new hairdo from her followers.

“You look beautiful!” one fan wrote.

“You look great with both hair colors. new looks are great to refresh and are really fun,” a different person said.

“Whatever makes you happy, do it,” another follower added.

A fourth fan commented, “You look great with a

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