Billie Eilish
The 18-year-old dressed for the British weather in near head-to-toe Burberry.
Ellie Goulding
The British star rocked a stained glass window-effect Koche number.
Lizzo
The international star looked like a snack in Moschino chocolate wrapper dress.
Harry Styles
The former One Direction star put on a brave face after reportedly being robbed at knifepoint just days before.
Mel C
The ex Spice Girl proved she's still as sporty as ever as she showed off her toned arms in a chic black dress with a plunging neckline.
Here are some of the other best looks from the night.
Adwoa Aboah
Anne-Marie
Charli XCX
FKA Twigs
Hailee Steinfeld
In Fendi.
Iris Law
In Christopher Kane.
Jorja Smith
In Jean Paul Gaultier
Joy Crookes
Kiefer Sutherland
Michael Kiwanuka
Mollie King
Montana Brown
Sam Fender