Taylor Swift offered the "biggest hug" to a fan named Emily after she detailed how the singer's music had helped her while battling medical problems caused by a congenital heart defect.
After her Barclaycard British Summer Time show at Hyde Park here, she posted on Twitter: "I think it's amazing that you're so honest about how it's affected you.
"It's impossible to be positive all the time about something that completely terrifies and confuses you, and I'm glad you're not putting that kind of weird pressure on yourself. Sending you the biggest hug from my hotel room, where I've just raided the snack bar and eaten everything in the style of a raccoon rummaging through a trash can (sic)."
Emily later said she was "grateful" for her icon's kind words.
"What she said to me was so incredibly kind and almost unbelievable, and I can't believe she replied with such empathy and understanding. I'm so grateful for what she said. It means the world to me," she told eonline.com.