"Jack and I are super excited to share with you all that we are expecting our second baby!" the model-turned-mommy blogger posted on her Raddest Mom blog Tuesday. "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!"
No word yet on the baby's gender.
Jack's mom Sharon Osbourne couldn't be more thrilled, tweeting, "Couldn't be happier for @MrJackO & @MrsLisaOsbourne! There is another Osbourne on the way!"
Congrats Jack and Lisa!
To see even more expecting celebs, click on the "Launch Gallery" link above!