Two of the evening top-billed acts, Billie Eilish and Green Day, decided to sneak in an onstage duet. As the band geared up to play their beloved 21st Century Breakdown track “Last Night On Earth,” ...

There, in one corner of the Vanity Fair Oscars party, was Billie Eilish ... was soon locked in a dance-off with Will Arnett to Michael Jackson’s “Rock With You.” And then, just as quickly ...