Jack Osbourne to be a dad – grandbaby for Ozzy & Sharon!

Oct 12, 2011 at 10:00 a.m. ET

Jack Osbourne is going to be a dad, and Ozzy Osbourne a grandpa – again! The happy news comes courtesy of the recently-engaged 25-year-old himself.

Congratulations are in order for Jack Osbourne and fiancee Lisa Stelly, who are expecting their first child together! News that Jack Osbourne is going to be a first-time dad was revealed by the reality show veteran himself, during an appearance on Piers Morgan Tonight.

Jack Osbourne, fiance Lisa Stelly

Jack Osbourne, the 25-year-old son of rocker Ozzy Osbourne, revealed the news to Piers Morgan on Tuesday night. "I'm going to be a dad," the newly engaged Osbourne shared. "I'm excited. I'm a little nervous."

Among the first well-wishers congratulating Jack Osbourne on his fiancee's pregnancy was sister Kelly Osbourne. "Been waiting 2 say this for so long im the happiest girl in the world im going to be an auntie!" tweeted Kelly Osbourne, adding to her future sister-in-law, "@lisamarstelly welcome 2 the family i

It appears that mom-to-be Lisa and the aunt-to-be Kelly were busy bonding when Jack Osbourne's baby announcement aired. Around the same time as the congratulatory tweet, Jack's sister Kelly also shared, "Girls night in w/ @lisamarstelly my future sister in law & mother of my niece/nephew we are so happy the news is out so i can talk about it."

Lisa Stelly,  who shared the picture above through her own Twitter account in August, also seems to be feeling the future sister-in-law love. In response to Kelly Osbourne's posts on Twitter Lisa tweeted, "Just spent the last hour on the phone with @MissKellyO ....she will be the best sister-in-law ever!

Jack Osbourne and Lisa Stelly's baby will be the first shared grandchild for Ozzy Osbourne and Sharon Osbourne, parents of Aimee, Kelly and Jack, but this is not Ozzy's first grandchild. The 62-year-old former Black Sabbath singer is already a grandfather of four through his children with ex-wife Thelma Riley.

Congratulations and best wishes for an easy pregnancy to Lisa Stelly and Jack Osbourne!

Image via Twitter