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Jack Osbourne welcomes a baby girl

Welcome to the world, Pearl Osbourne! Jack Osbourne's fiancee, Lisa Stelly, welcomed the couple's first child -- a daughter -- his rep confirms to Us Weekly. Photos from Us: Hollywood's new star dads Little Pearl weighed a healthy 8 lbs., 6 oz. at birth. The entire Osbourne family -- including Jack's mom, Sharon, and sister, Kelly -- have been anxiously awaiting Pearl's arrival, and tell Us Jack
Frederick M. Brown / Getty Images / Today

Welcome to the world, Pearl Osbourne! Jack Osbourne's fiancee, Lisa Stelly, welcomed the couple's first child -- a daughter -- his rep confirms to Us Weekly.

Photos from Us: Hollywood's new star dads

Little Pearl weighed a healthy 8 lbs., 6 oz. at birth.

The entire Osbourne family -- including Jack's mom, Sharon, and sister, Kelly -- have been anxiously awaiting Pearl's arrival, and tell Us Jack will be a terrific father.

Photos from Us: Most talked-about celeb pregnancies

"He's very nervous -- but nervous-excited," Sharon, 59, told Us Thursday. "He'll be a very good dad. I think he'll be very strict, but he'll be a very good dad."

Auntie Kelly can't wait to spoil her niece -- with the most comprehensive baby wardrobe in town!

Video from Us: Go inside Kelly's closet

"I already told him that this baby ... is going to be the best-dressed baby there is," Kelly, 26, has said. "'You're not buying the clothes -- I am!'"

The youngest child of Sharon and Ozzy Osbourne, Jack, 25, announced his engagement to aspiring actress Stelly in September and confirmed their pregnancy two weeks later.

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