Jack Osbourne and wife expecting second child

Jack and Lisa Osbourne attend the 20th Annual Race to Erase MS Gala at the Hyatt Regency Century Plaza on May 3, 2013, in Century City, Calif.
Frederick M. Brown/Getty Images

Jack Osbourne is going to be a dad again.

He and wife, Lisa, are expecting their second child, she revealed in an announcement Tuesday on her blog.

"Jack and I are super excited to share with you all that we are expecting our second baby!" she wrote. "I am in my second trimester, feeling great & trying not to eat everything in sight. We feel so blessed that our family is growing & Pearl will have a little brother or sister to play with. It's crazy to think that we will soon be a family of four!"

Jack and Lisa Osbourne are already parents to a 15-month-old daughter named Pearl Clementine. Her arrival made Jack's parents, Ozzy and Sharon Osbourne, first-time grandparents.