A glowing and proud Katie Holmes spoke to ET after her official Broadway debut in the revival of Arthur Miller's All My Sons Thursday night in New York City. Watch Katie gush about husband Tom Cruise's unwavering support, and hear her fellow cast members weigh-in on Katie's big night!

"He's been here, and he's just made me feel so good...," Katie told ET about Tom. "I was so nervous and I saw him and it made me feel so much better."

Watch Katie tell ET what Tom's advice to her was, and see Katie's cast mates and celeb audience members discuss the night!