It's a girl for Jack Osbourne!

There's a new princess in the world of rock royalty today. Jack Osbourne -- son of metal legend Ozzy Osbourne -- and his fiancee Lisa Stelly have welcomed their baby girl into the world!

In true reality star fashion, the new dad brought his little love bug to public attention through social media.

Osbourne announced the joyous news by retweeting a message from Rosie Nixon of Hello! magazine who wrote, "HELLO! can exclusively announce the safe arrival of @MrJackO & @lisamarstelly 's baby girl Pearl weighing 8lb 6oz. Love & congrats to them!"

Jack's sister Kelly Osbourne confirmed the news on Twitter, also. "Thank you so much for your congratulations but they realy should be gonig to @lisamarstelly & @mrjacko! [sic]," she wrote. "I am one proud Auntie!"

Jack and Lisa announced their engagement in September, just weeks before revealing their baby news to Piers Morgan. "I'm going to be a dad," he shared. "I'm excited. I'm a little nervous."

He later told Britain's Star Magazine, "I'm excited. It's a very good thing. It wasn't planned, if that tells you anything..."

"I'm just really happy about the whole thing. It's going to be a new chapter in my life and I'm excited about it."

Neither Ozzy nor Sharon Osbourne have commented on their darling granddaughter as of yet, nor word if little Pearl will be characterized on the family's upcoming animated show The F'n Osbournes.

Image courtesy WENN

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