Jack Osbourne is going to be a father

Jack Osbourne attends the Activision's Ultimate "Call of Duty XP" Fan Experience on Sept. 3, 2011, in Los Angeles.

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(CBS) Jack Osbourne, the son of rocker Ozzy Osbourne, is going to have a child of his own.

He revealed during an interview on "Piers Morgan Tonight" that his fiancee, actress Lisa Stelly, is pregnant with the couple's first child.

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"My life is absolutely insane right now... I guess technically I do have something to tell you. I'm about to be a father," he said during the Tuesday appearance, according to Access Hollywood.

"I'm excited. I'm a little nervous, but I'm excited. It's going to be fun," the 25-year-old added. "I'm not going to do a reality show, though."

His parents, who also appeared during the interview, shared their thoughts on the impending arrival.

Ozzy Osbourne told Piers Morgan: "I'm in shock, I think it's fabulous."

His wife, "The Talk" co-host Sharon Osbourne, added: "I'm happy because it's what Jack wants, so I'm happy. And I've always wanted to be a grandma, so it couldn't be better."

Jack's sister, Kelly Osbourne, also shared her excitement on Twitter: "been waiting 2 say this for so long im the happiest girl in the world im going to be an auntie!"

Jack  and Stelly announced their engagement last month.

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