“The Kacey Musgraves Christmas Show” premiered on Amazon Prime Video on Friday, Nov. 29, with all-star special guests and an incredible host. The special featured performances from James Corden, Camila Cabello, Kendall Jenner, Lana Del Ray, Zooey Deschanel, Troye Sivan, Leon Bridges, Fred Armisen, the Rockettes and the six-time Grammy-winning host herself.