Niall Horan, Liam Payne, Louis Tomlinson and Harry Styles attended the Billboard Music Awards in Las Vegas on Sunday night (17 May), their first public appearance since Zayn sensationally quit the band in March.
Despite admitting recently they had been "angry" over Zayn's decision, the foursome made sure to thank him when they won their first award of the night for 'Top duo/group'.
After delivering their thanks, Liam added: "There's one more person to share this with and that's our brother Zayn."
Later in the night, the band also won 'Top touring group'.
Zayn quit One Direction at the end of March, saying in a statement: "I am leaving because I want to be a normal 22-year-old who is able to relax and have some private time out of the spotlight.
"I know I have four friends for life in Louis, Liam, Harry and Niall. I know they will continue to be the best band in the world."
Watch the public - and some celebs! - react to Zayn's exit from 1D: