Miley Cyrus' ex and Taylor Swift's one-time music video crush Justin Gaston is officially a DILF!

The 27-year-old singer turned actor is now the proud dad of a beautiful baby girl — and he just celebrated her two-month birthday on Instagram!

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"Happy birthday Liv!!" Justin captioned the adorable pic of his daughter Olivia, whom he welcomed with wife, soap star Melissa Ordway.

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Justin, who also played John Stamos on Lifetime's Unauthorized Full House Story, opened up about wanting kids last year.

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"We definitely want kids," he said, "but not at the moment. For now I think I’ll continue acting. I’ll always do music, but I think I’ll keep [focusing on] the acting."

This is the first child for the couple, who tied the knot in 2012.