The show airs live Sunday night on ABC.
The 35-year-old singer says she's always been a 'huge fan' of the 'What About Us' rocker.
The annual awards show airs live from the Microsoft Theater in Los Angeles on Nov. 19 at 8 p.m. ET on ABC.
Sunday's awards show marks BTS' first performance on U.S. television.
The super popular Korean boy band landed in L.A. on Tuesday, and had already performed on two late night talk shows by Wednesday evening.
ET was with the K-Pop boy band, who is taking the world by storm, at the rehearsals for their upcoming AMA performance.
The AMAs will air live from Los Angeles' Microsoft Theater on Nov. 19 at 8 p.m. ET on ABC.
The K-Pop boy band is in L.A. as they prepare for their first performance at the 'American Music Awards' on Sunday.
The singers join Selena Gomez, Christina Aguilera and BTS as performers at the upcoming awards show.
The boy band will make their U.S. TV performance debut at the awards show this month.
The 36-year-old performer will pay tribute to the late singer at the awards show on Nov. 19.
Selena Gomez's appearance will mark her first performance since her kidney transplant reveal in September.
