Eilish made the televised debut performance of "Lunch" on Tuesday (May 21) show, where she also dreamed about recording a standards album one day.
The "Late Show" host shared a special keepsake that reminds him of the late country star every day.
The "Pink Friday 2" rapper also revealed her stacked favorite sandwich and the A-list surprise guest at her first concert on Tuesday night's (Jan. 16) "Late Show."
The pop superstar chatted with Stephen Colbert on her music, family, courage and more.
