The couple, who were married in 2014, revealed the big news October 8 on Instagram. The twins are named Willow and Ethan. Jackson wrote, “Best day of our lives. We will never recover. Welcome to the world our beautiful Willow and Ethan.”
Jackson, whose Broadway credits include The Performers, Finian's Rainbow, Xanadu, All Shook Up, Thoroughly Modern Millie and Aida, will star in the new TV pilot American Woman, which will also feature Alicia Silverstone and Mena Suvari.