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Look who’s 4!

Supernatural star Jensen Ackles shared birthday greetings for daughter Justice Jay via Instagram Tuesday.

“4 years ago, today, she came in to this world. And changed my life forever. #happybirthday JJ,” the Days of our Lives alum, 39, wrote.

The actor’s wife, One Tree Hill star Danneel Harris Ackels, shared snaps from their daughter’s birthday bash.

“Happy Birthday Birdie! We adore you! #sweettreetsbakery #atxwholefoodsart #4yearsyoung,” she Instagrammed the images.

JJ was born on May 30, 2013.

The Smallville alum and the actress welcomed twins – son Zeppelin Bram and daughter Arrow Rhodes – on Dec. 2, 2016.

Happy Birthday to JJ!

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