Instagram/Michelle Williams & Thoma Celebrity Michelle Williams & Thomas Kail stun at the 'Proof' Broadway opening. See their red carpet style and learn about their creative partnership. April 18, 2026 AceShowbiz - Michelle Williams and her husband Thomas Kail made a rare and elegant red carpet appearance in New York City on April 16, celebrating the opening night of Thomas' latest directorial venture, the Broadway revival of Proof.The couple captivated the audience with their stunning style choices.