Report: Scott Baio Is ... a Father

It's "Happy Days" for Scott Baio, who didn't expect to be a dad until December.

The reality show star and his fiancee, Renee Sloan, welcomed a baby girl into their lives on Friday, Nov. 2, according to Life & Style.

Reportedly, the girl, whose name has yet to be released, arrived five weeks early and weighed 5 lbs., 10 oz. at birth. She joins her big sister Kayln, Sloan's 18-year-old daughter from a previous relationship.

This past summer, Baio, now 46, starred in the VH1 reality show "Scott Baio is 45 ... and Single," which focused on his commitment-phobia and other relationship issues. The season concluded with his longtime girlfriend Sloan, 35, revealing her pregnancy. VH1 has already renewed the show for another season, which will focus on Baio's fatherhood.

"Scott Baio Is 45 ..." averaged 1.3 million viewers for initial airings this summer, with about three-fourths of those viewers falling into the adults 18-49 demographic.