James Corden and Michael Buble kick off a holiday mashup of "Christmas (Baby Please Come Home)" with the musicians who joined James for Carpool Karaoke in 2018, including Migos, Cardi B, Paul McCartney, Shawn Mendes, Ariana Grande, Barbra Streisand, Adam Levine and Christina Aguilera.
| Name | Type | Role | |
|---|---|---|---|
| Shawn Mendes | Guest Star | ||
| Christina Aguilera | Guest Star | ||
| Ariana Grande | Guest Star | ||
| Migos | Guest Star | ||
| Barbra Streisand | Guest Star | ||
| Cardi B | Guest Star | ||
| Adam Levine | Guest Star | ||
| Paul McCartney | Guest Star |