0507_osbourne_insetJack Osbourne is the proud dad of a baby girl, and he's showing her off in HELLO! magazine!

The 25-year-old graces the cover of this week magazine, along with his fiancée Lisa Stelly and his mother Sharon, who became a first time grandparent when baby Pearl was born on April 24.

"It’s incredible to see Jack holding his baby girl, walking around so confidently," the happy "nana" told the magazine. "He's very nurturing and he and Lisa are so good together."

Jack admitted that he wasn't sure how to handle the news at first, as the couple got pregnant just three months after they'd met.

"What do you say? If we'd been trying for two years, of course you'd be like 'Awesome!' But we met in May and found out in August," he said."I told Lisa, 'You need to give me a week to really take this in'. I had that time to get my head around the whole situation."

And now, the former bad boy couldn't be happier. "The moment I saw her I felt more love than I'd ever felt for anything. It was the weirdest, most overwhelming thing."

For more, check out the full article in HELLO! Magazine, available now.

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