Sam Smith has pulled out of the Capital Summertime Ball after losing his voice.
The 'Stay With Me' singer announced he wouldn't be performing at Saturday's (June 21) event via his Facebook page just hours before he was due on stage.
The 22 year old has just returned to the UK after a whirlwind trip to the US, where he performed on the Late Show with David Letterman.
"Dear Capital FM & everyone attending the Capital Summertime Ball," he wrote.
"I am so so sad to say I won't be performing today. I've just got off the plane and my voice has completely gone.
"This is the first show I've ever had to cancel and I am praying that it is the last. I really have to avoid any long term damage to my voice.
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"Once again, I am so sorry. All my love x."
Miley Cyrus, Cheryl Cole, Pharrell Williams and 5 Seconds Of Summer are among the acts performing at this year's event at Wembley Stadium.
