Credit: Sharone Osbourne on Twitter Photo: Jack Osbourne and His Daughter Pearl

This is heartbreaking.

Jack Osbourne, who was just announced for the cast of Dancing With the Stars Season 17, has been awaiting the birth of his second child, a boy to be little brother to his 16-month-old daughter, Pearl.

But Jack’s wife Lisa shared a tragic baby update in her blog on September 5.

"I have been dreading this announcement…. I needed some time before being able to say it," she wrote. "Jack and I lost our baby boy last week. Having a late term miscarriage is by far the hardest thing either of us have ever had to go through. We appreciate all of your prayers and ask for privacy and respect during this time. It’s important to stay hopeful and optimistic through life’s toughest moments. We never know why things like this happen. All we can do is trust in God and know he has a plan for our lives."

In early August, Lisa was so excited to announce that she was pregnant. "I am in my second trimester, feeling great & trying not to eat everything in sight," she blogged at the time. "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!”

Our hearts go out to the Osbournes at this awful time. Stay strong.

Sources: Raddest Mom blog, People