Steven Tyler is a grandfather for the fourth time!
The rocker's daughter, Mia, gave birth to her first child on Wednesday, May 10 and since Liv already has three kids, Tyler is now a grandpa four times over.
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Mia had a baby boy and named him Axton. She shared a few sweet pics of her little bundle of joy on Instagram.
"The love of my life has finally arrived and I am now complete. No words can explain how I am feeling. Just pure unfiltered love," she captioned one photo where she's holding him.
"Best day of my whole entire life," the 38-year-old wrote alongside another pic, which is a closeup of her son. "I'm so grateful for my family and my lover for being here & being so supportive. And to the friends and family that came to welcome our new lil wolf cub, Ax into the pack."
Congrats to the new mom and her family!