Billie Eilish is on the top of the list of performers for Prince William's Earthshot Prize Awards Ceremony in Boston on Friday.
She will be joined by her brother and collaborator FINNEAS.
Annie Lennox, Ellie Goulding and R&B duo Chloe x Halle are also set to perform at the awards gala, while Prince William and Kate Middleton will be the guests of honour at the event.
Bohemian Rhapsody actor Rami Malek is one of the presenters, while Sir David Attenborough will narrate the opening of the awards.
The Earthshot Prize was launched in 2020 and aims to promote impactful approaches to the world's most pressing environmental challenges.
There are 15 finalists vying for the £1 million prize money.
The show will be available globally on YouTube.