Jack Osbourne’s Baby Is Due Any Minute, Says Mom Sharon

V personality Sharon Osbourne attends the Kreiss 75th anniversary celebration at Kreiss on April 19, 2012 in Los Angeles, California. David Livingston/Getty Images

Jack Osbourne tweeted this week that his pregnant fiancee Lisa Stelly's due date was April 18, and now that the date has passed with no labor pains in sight, his famous family is anticipating the little one's arrival even more!

"We're very, very excited!" Jack's mom Sharon Osbourne told Us Weekly at the 75th Anniversary of Kreiss event in Los Angeles Thursday. "We're waiting for the phone to ring to say 'Just get to [the hospital]' and we will be there."

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

Jack's 27-year-old sister Kelly elaborated on her mum's sentiments by gushing to Us, "My brother's going to be the best father in the world. I'm so proud of him and he's such a gentleman, and he is so incredible. The changes he's made in his life to get ready for this baby and just watching him grow up has been just so magical."

kelly osbourne
TV personality Kelly Osbourne attends the Kreiss 75th anniversary celebration at Kreiss on April 19, 2012 in Los Angeles, California. David Livingston/Getty Images

As for dad Ozzy, 63, the Osbourne matriarch says that even he has been giving parenting words of advice to his 26-year-old son.

"He just said, 'now Jack will realize the meaning of love, because you will never love anything the way you love your first child,'" Sharon mused.

In September, Us exclusively confirmed that Jack was engaged to his actress girlfriend. Two weeks later, the reality star-turned-film-director announced on Piers Morgan that he and his wife-to-be were expecting their first child together.

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