"Santa Baby" was performed twice by Stefani during the 2017 holiday season. As part of a promotional campaign for "You Make It Feel Like Christmas", Stefani appeared as a guest or performed on various television series in the US. On the November 20, 2017 episode of NBC's "Today", Stefani was featured as a guest and performed "Santa Baby", "When I Was a Little Girl", and "Christmas Eve" to the studio audience. For the appearance, she wore a sleeveless white gown adorned by a dangly feather boa and sparkly jewelry. The same day, the taping of her mini concert was posted to Stefani's official YouTube channel and her separate Vevo account. The second time Stefani sang "Christmas Eve", she performed it on her Christmas television special "Gwen Stefani's You Make It Feel Like Christmas", which was broadcast to NBC on December 12, 2017. She performed the song ahead of "Christmas Eve" and wore a sparkly Santa Claus-inspired outfit. Stefani was later joined by a Claus lookalike at the end of the performance. Emily Krauser from "Entertainment Tonight" enjoyed the outfit, saying that she "absolutely slay-belled the fashion game" during the special. The full video of "Santa Baby" from Stefani's televised special was uploaded to her YouTube channel on December 30, 2017.