2020 American Music Awards just added a few more big names that will be performing at Sunday's ceremony. Bebe Rexha and Doja Cat will hit the stage together in addition to some special performances by Machine Gun Kelly, Dan + Shay, Lewis Capaldi.Beliebers can also rejoice! For the first time in four years, Justin Bieber will be hitting the stage in celebration of the 10-year anniversary of when he first performed his song, «Pray,» at the awards show. Bieber's upcoming performance, brought to