Billie Eilish brings all the feels to her Oscars performance. The singer performed 'What Was I Made For?' at the 96th Academy Awards alongside her brother, Finneas, with whom she co-wrote the track for the 'Barbie' soundtrack. Following the performance, Billie and Finneas received a standing ovation from audience, including the 'Barbie' cast and fellow singer Ariana Grande. The 96th Academy Awards aired Sunday on ABC.