Sir Elton John said he could not see the stage show for which he wrote the music because he had lost his eyesight.

At the gala screening of The Devil Wears Prada: The Musical, he said: “I lost my eyesight and couldn’t see the performance, but I enjoyed listening to it.”

The West End show hosted a charity gala for the Elton John AIDS Foundation on Sunday night.

The star-studded event attracted many famous faces, including Anna Wintour, Lily Collins and Donatella Versace.

The 77-year-old pop star was has been struggling with his vision since an infection in his right eye in July.

Although his exact condition is unclear, Sir Elton told ABC News’ Good Morning America in November that he contracted the infection in the south of France.

“It’s been four months now since I can’t see, and my left eye isn’t great anymore,” he said at the time.

Speaking to the BBC on the red carpet: Wintour said she was looking forward to supporting Elton and described the musical as “entertaining”.

When asked if the film and musical are even representative of what the fashion industry is actually like, answered Editor-in-Chief of Vogue said it was “the audience’s decision.”

“It’s up to the audience and the people I work with to decide if there are any similarities between me and Miranda Priestly,” she added.

It was often rumored that the character of Priestly was loosely based on Wintour.

The Devil Wears Prada tells the story of an aspiring young journalist, Andy, who becomes assistant to one of New York’s most notorious fashion magazine editors, Miranda Priestly.

American fashion designer Betsey Johnson said: “Everyone in the fashion industry loves the show.”

The 82-year-old said she was “lucky” to have made it in the industry without having to “play the game”.

“When I first saw the movie I thought, thank God I missed all that because I didn’t want to go through all that.”

In the production, American singer and actress Vanessa Williams takes on the iconic role of the feared fashion magazine editor Miranda.

TV personality Michelle Visage said Williams, best known for her roles on Ugly Betty and Desperate Housewives, was “absolutely” always the perfect person to play Priestly.

Visage also spoke to the BBC about the progress the fashion industry is making.

“I can’t believe in the movie Andy was called fat when she was a size 10,” she said.

“I would hope that things have changed – we have seen more inclusion and I hope that we always hope to make progress.”

Model Elizabeth Hurley said she thinks “every woman’s body is celebrated now” and was excited to see “how that will be showcased in this theatrical performance.”

However, singer Beverley Knight said she doesn’t think “the fashion industry has evolved by leaps and bounds” in the way it views women of different sizes.

Beauty and the Beast actor Luke Evans said he loved the film because it was “full of characters and egos” but he had “no idea” why it was such a cultural phenomenon.

“That’s probably because fashion changes all the time, but the people at the top never do, and this is kind of the insider version behind the scenes,” he said.

He added that he didn’t think there were many similarities between Priestly and Wintour as he had “met Anna many times and she was very nice, so I don’t think they were similar.”

Comedian David Walliams and his mother were also in attendance and both said they “know it’s going to be great and we haven’t even seen it yet”.

“We miss Strictly Come Dancing because we love Elton so much,” the couple joked.