Rock veteran Steven Tyler is set to become a grandfather again - his daughter Mia is expecting her first child.
The actress and photographer, 37, took to Instagram on Friday to share the happy news with fans as she posted a side profile of her growing baby belly.
"My front bump is almost as big as my butt bump!" she captioned the image. "Insanely excited to tell the world that our baby will be here this spring."
Mia did not identify her child's father, but she has been linked to Dan Halen, who she traveled to London in September and recently branded her "man crush everyday" on Instagram.
She added, "And by crush I literally mean I want to crush him. Because I love him. And want to crush him."
Mia was previously married to David Buckner, but they split in 2005 after two years as husband and wife.
She is Aerosmith rocker Steven's only child with his first wife, late actress Cyrinda Foxe, who died from a brain tumor in 2002.
Mia's baby news emerges four months after her half-sister, Hollywood star Liv Tyler, gave birth to her third child, daughter Lula Rose with her fiance Dave Gardner. The couple also shares son Sailor Gene, while 39-year-old Liv is mom to 11-year-old Milo, from her first marriage to rocker Royston Langdon, too.
Steven Tyler has yet to comment on Mia's pregnancy, but the mother-to-be had her dad on her mind on Saturday as she shared an old photo of herself as a kid, trying to wake up her father, who had pulled his duvet cover over his head.
"Feeling nostalgic today!" she wrote beside the sweet shot. "This must have been 1979 in New Hampshire. All I wanted was for him to wake up and play with me and now a days all he wants me to do is wake up and play with him! Nothing like the love from a father."