Mötley Crüe rocker Nikki Sixx is a dad of five!

This Saturday, July 27, the star welcomed a baby girl with wife Courtney Sixx.

Nikki, 60, took to Instagram this Wednesday, July 31, to share the exciting news.

"Saturday night my wife Courtney and I welcomed into our world and family a very beautiful baby girl named Ruby Sixx," he captioned a photo of a white bassinet overflowing with pink flowers. "A spunky little girl with a full head of hair making her the 5th Sixx joining her two sisters and two brothers."