The star also thanked her dance and choir teachers – including one who “didn’t like” her
The power ballad is nominated for Best Original Song
The star was joined by brother Finneas to perform their Barbie soundtrack song, ‘What Was I Made For?’
Eilish has the chance to win her second Oscar with 'What Was I Made For?'
The crime drama series returns for a fourth season
"It takes time to get the record made and get the artwork done"
The producer and songwriter also said he "got a little rusty" while making the record at one point
One day after he performed with his sister Billie Eilish on the same intimate stage, Finneas returned for his first-ever solo headline show in the UK while she watched on from the balcony
"London doing a special lil performance for you"
Finneas is over in the UK to perform with Billie Eilish at Reading & Leeds