VIDEO : Ariana Grande, Mac Miller To Perform Together At Manchester Benefit Concert

Ariana Grande will reportedly bring out her boyfriend, Mac Miller, for a surprise performance at her star-studded One Love Manchester benefit concert on Sunday. According to a set list obtained by Entertainment Tonight, Grande and Miller are set to take the stage together at the end of the three hour concert. Miller canceled his scheduled performances over Memorial Day weekend in Washington state and in Minnesota, in wake of the bombing in Manchester that killed 22 people following Grande's concert.