Steven Tyler is going to be a grandpa — again!

The Aerosmith frontman took to Instagram on Sunday, Nov. 20 to confirm his daughter Mia Tyler, 37, is pregnant!

"MY BABY IS HAVING A BABY," the 68-year-old rocker captioned a sweet throwback photo of his little girl.

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MY BABY IS HAVING A BABY

A post shared by Steven Tyler (@iamstevent) on

Steven welcomed Mia with his first wife, Cyrinda Foxe — whom he was married to from 1978 until 1987 — back in 1978. He's additionally a father to actress Liv Tyler, 40, from a previous relationship with Bebe Buell and to a daughter Chelsea Anna Tallarico, 27, and a son, Taj Monroe Tallarico, 25, with his second wife, Teresa Barrick, whom he divorced in 2006 after nearly 20 years of marriage.

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Mia is expecting her first child with her boyfriend, Dan Halen. Her little one will join Steven's three other grandchildren: Liv's three kids, 11-year-old Milo, 21-month-old Sailor *and four-month-old *Lula Rose.