Will Young's twin brother Rupert has died at the age of 41 after a battle with mental health issues.
Rupert, who was born 10 minutes after his popstar sibling, had spoken about suffering from depression and alcoholism in recent years.
A spokeswoman for Young told The Sun: "I can confirm that Will's brother has very sadly passed away.
"We would like to request privacy for Will and his family during this very difficult and sad time."
A close family friend told the newspaper: "Will's relationship with Rupert had been tough over the years at times, and they had both spoken about the mental health problems which had made it challenging.
"But there were hopes he had turned a corner and they are a very loving family - and utterly devastated by his passing."
Rupert is survived by Will, their older sister Emma and parents Robin and Annabel.