Jack Osbourne is a Dad

Jack Osbourne is a new daddy.

This week, Jack, the son of rocker Ozzy Osbourne and The Talk co-host Sharon Osbourne, welcomed a baby girl named Pearl with his fiancee, actress Lisa Stelly. British glossy Hello! magazine reported the news on Tuesday.

Hello! can exclusively announce the safe arrival of @MrJackO & @lisamarstelly ‘s baby girl Pearl weighing 8lb 6oz. Love & congrats to them!” the magazine said in a Twitter posting.

Osbourne and Stelly, both 26, announced the pregnancy in October 2011.