Olivia Rodrigo's Surprise Duet With Billy Joel at Madison Square Garden

Olivia Rodrigo just had a monumental career moment! On Wednesday night, the 19-year-old singer performed with Billy Joel at Madison Square Garden. When Olivia joined the iconic 73-year-old singer on stage, they performed her hit, 'Deja Vu,' and his 1983 classic, 'Uptown Girl.'