Gigi Hadid has sent a message of support to Zayn Malik after he was forced to pull out of a performance.
The singer was due to play at the Capital FM Summertime Ball at Wembley on Saturday but he cancelled, saying he had "suffered the worst anxiety of my career".
The gig would have been the 23-year-old's first solo UK performance.
"We are all here to support you," Hadid, the star's girlfriend, posted on Instagram.
The Summertime Ball saw other performances from Little Mix, Craig David and Ariana Grande.
"Guys, we're absolutely gutted that @zaynmalik is unable to perform tonight due to illness. We know you're with us in wishing him better," Capital FM confirmed.
Some fans were unhappy at the news and left the venue in protest.
In reply to his post, Gigi Hadid, a model, said on Twitter: "Your bravery in those times made me proud, but your honesty last night proved what you're all about, being real," she wrote.
The former One Direction star also received messages of support from his cousin Sarooha Malik, who tweeted "proud of you".
And lots of fellow musicians expressed sympathy.
This is not the first time Zayn has called off live appearances.
In January, the Bradford-born star pulled out of The Graham Norton Show due to "scheduling" issues.
In February, he cancelled a BBC Radio 1 interview with Greg James.
Zayn's solo career began a year after he quit One Direction during a world tour.
A statement from the band's management at the time said he had been signed off with "stress" and had returned to the UK "to recuperate".
After officially calling time with the band, he said: "My life with One Direction has been more than I could ever have imagined. But, after five years, I feel like it is now the right time for me to leave the band.
"I'd like to apologise to the fans if I've let anyone down, but I have to do what feels right."
The mental health of musicians was one of the big talking points at this year's Great Escape Festival.
Other artists who have also publicly discussed suffering from anxiety include Olly Alexander from Years and Years.
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