Tony Kanal and Erin Lokitz Tony Kanal and Erin Lokitz

No Doubt's Tony Kanal and longtime girlfriend Erin Lokitz welcomed a baby girl on Monday, the couple announced on the band's website.

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"Welcome to the world our gorgeous daughter - Coco Reese Lakshmi Kanal," the 40-year-old bassist wrote. "Mom, Dad and Baby are happy and in love."

Coco joins five other No Doubt children: Gwen Stefani's sons, Zuma, 2, and Kingston, 4; Tom Dumont's sons, Rio, 2, and Ace, 4; and Adrian Young's son, Mason, 8.