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Nikki Sixx is a dad again at 60!
The Mötley Crüe founder and rock star welcomed a daughter over the weekend with wife Courtney Sixx.
They named her Ruby Sixx.
Sharing a photo of a white bassinet full of an array of different pink flowers, the famous bassist announced the birth news on Instagram Wednesday.
"Saturday night my wife Courtney and I welcomed into our world and family a very beautiful baby girl named Ruby Sixx," he stated.
Calling her "spunky," Sixx reveals their new addition has "a full head of hair."
Turning the focus on himself, Sixx -- who's already a dad to four other children -- adds that "Fatherhood has been the greatest joy in my life."
Continuing the post, he gushes over his bride and says Courtney's "natural as a mom."
Ending the announcement, Sixx jokes that they're "sleep training her with a metronome and I got her a pink bass."
Courtney mirrored Sixx's love for Ruby, saying she "instantly head over heels in love as my life changed forever in an instant."
She wrote about her excitement over being a mom and said, "Nikki will be the most wonderful daddy ever just as he has been with my four step-children."
The couple married in 2014.
Ruby is Courtney's first biological child, but she's been an active stepmom to Sixx's four children.
The rock star's new addition makes a total of 5 kids for Sixx. He's also Dad to Gunner, 28, Storm, 25, Decker, 24, and Frankie-Jean, 18.
As The Blast reported, he's currently at odds with Frankie-Jean's mom, Donna D'Errico.
The former "Baywatch" babe, who officially divorced Sixx in 2007, claims he owes her $24,771 in back child support.