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Chris Pratt celebrated a milestone birthday with his oldest child.

Pratt, 46, reveled in the fact that he now has a teenager at home as he honored his son Jack on his 13th birthday.

The "Guardians of the Galaxy" star shared a rare gallery of fun times on social media Sunday to mark Jack's big day.

Pratt and his ex-wife, Anna Faris, welcomed Jack in 2012 and have co-parented since their split in 2017.

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"I have a teenager???" Pratt wrote over a collection of images shared to his Instagram stories . "Jack, I can't believe you are 13 today. I've watched you grow into such an incredible young man, and am truly proud of the person you are becoming."

Chris and J

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