Michelle Williams is engaged to "Hamilton" director Thomas Kail, and the two are expecting a baby.br Williams who was formerly married to the late actor Heath Ledger is best known for her role in Dawson's Creek.br Kail is a four-time Oscar nominee and a Tony Award-winning director of the smash Broadway hit Hamilton.br The couple worked together on "FosseVerdon," for which Williams won the Emmy Award and Kail directed.