Nikki Sixx and wife Courtney Bingham Sixx have welcomed a new member of their crew.
The Mötley Crüe bandleader and the fashion model announced the arrival of their bundle of joy on Instagram Wednesday.
"Saturday night my wife Courtney and I welcomed into our world and family a very beautiful baby girl named Ruby Sixx," the proud papa beamed. " A spunky little girl with a full head of hair making her the 5th Sixx joining her two sisters and two brothers."
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Sixx has four children from previous relationships with former Playboy Playmate Brandi Brandt and actress Donna D'Errico.
"Fatherhood has been the greatest joy in my life.....and @how2girl is a real natural as a mom," Sixx continued. "I would like to thank our family and friends for all the love and support ( and flowers)."
The former heavy metal madman-turned-family man is starting his daughter out on a musical path already.
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"We are already sleep training her with a metronome and I got her a pink bass," he wrote.
Sixx had a vasectomy years ago and reportedly used a sperm harvesting method and artificial insemination instead of a reverse vasectomy in order to father his fifth child.
Bingham and Sixx got married in 2014. This is her first child.