"I have been dreading this announcement.... I needed some time before being able to say it. Jack and I lost our baby boy last week," she wrote. "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."
A few hours later, Lisa tweeted: "Cuddling my amazing, sweet hubby & shutting my eyes. Thank you all for the love & support. It means the world."
Jack and Lisa married last October and have a daughter, Pearl, 16 months. Earlier this week, Jack, who was diagnosed with multiple sclerosis in 2012, was announced as a cast member of Dancing with the Stars.