Jack Osbourne & Girlfriend Welcome a Baby Girl!

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Jack Osbourne is officially on diaper duty!

HELLO! Magazine is reporting that the 26-year-old, who is the son of rock legend Ozzy Osbourne, and his girlfriend Lisa Stelly have welcomed their first child together. Weighing in at eight pounds, six ounces, they named their daughter Pearl.

We’re sure grandma Sharon Osbourne and auntie Kelly Osbourne will be thrilled with the newest addition to their famous family!

Congrats all around!

Looks like Jack and his gal were ready for their bundle of joy! Though she was due on April 18, Lisa tweeted on Friday, April 20:

There are plenty of other expectant celebs out there —  check them out the gallery below!