One Direction star Liam Payne has died at the age of 31.
The singer reportedly fell from the balcony of a hotel in Argentina, where he'd been staying with his girlfriend.
Police say he had "extremely serious injuries", and pronounced him dead at the scene.
Dermot O'Leary is among the celebrities paying tribute to the 31 year old, describing him as 'a joy'.
Paris Hilton's written how it's "so upsetting" to hear the news.
The team behind the Brit Awards says it's "incredibly sad".