Raise your glass to Pink and Carey Hart’s daughter Willow ‘s major milestone.

The 14-year-old began her first day of high school Thursday, with Hart documenting the “crazy” moment via Instagram .

“My lil girl is growing up and taking the 1st major step in chasing her dream,” the former motocross racer, 50, wrote. “You will be on broadway one day. So proud of you.”

The freshman grinned in the social media upload as she held a pink Stanley water bottle with a cream backpack over one shoulder.

The teen looked all grown up in a cropped pink tap and belted jeans.

Hart’s followers gushed over the back-to-school snap, with one asking, “Who is that lovely lady? Go Willz!”

The ex-athlete also included a photo of his and Pink’s 8-year-old son, Jameson, standing on the sidewalk giving a dou

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