Princess Diana wore a lingerie-inspired gown for her only Met Gala appearance. It was the ultimate 'revenge' dress.

• Princess Diana made her only Met Gala appearance in 1996, shortly after divorcing then-Prince Charles.
• She wore a lingerie-inspired silk dress designed by John Galliano.
• Galliano said Princess Diana tore the corset out of the dress without telling him.

Princess Diana only attended one Met Gala, but she sure knew how to make an entrance.

In honor of fashion's biggest night, which returns on Monday with the theme "Superfine: Tailoring Black Style," we're diving back into the Met Gala archives.

And it'd be hard to find an A-list attendee who made a bigger splash than the people's princess.

Diana walked the famous Met steps on December 9, 1996, four months after she finalized her divorce from then-Prince Charles.

The 1996 Met Gala theme paid tribute to Christian Dior, so Diana wore a dress designed by John Galliano, who had just become head designer of the legendary French fashion house.

Diana wore a navy-blue, lingerie-inspired slip dress decorated with black lace, as well as a matching robe.

She accessorized the slinky ensemble with sapphire earrings and a sapphire choker necklace that matched her iconic engagement ring.

In the 2024 Hulu docuseries "In Vogue: The 90s," Galliano revealed that he tried to convince Diana to wear pink to the Met Gala.

"We went to Kensington Palace and discussed drawings. I was trying to push for pink, but she was not having it. 'No, not the pink!' That was real, real fun," he recalled.

Galliano's dress originally had a corset, but he said Diana removed it without letting him know before she arrived at the Met Gala.

"Fast-forward to the event, and I just remember her getting out of the car," Galliano said. "I couldn't believe it. She'd ripped the corset out."

"She felt so liberated. She'd torn the corset out. The dress was much more… sensuous," he added.

Eloise Moran, author of "The Lady Di Look Book: What Diana Was Trying To Tell Us Through Her Clothes," told Yahoo during a 2021 interview that Diana's Met Gala ensemble was a "revenge" look following her divorce from Charles.

"That was one of her most shocking dresses," Moran said. "But I thought she looked fabulous. She just looks so happy and confident."

"I think she was embracing it and enjoying it," the author added. "She knew she could never get rid of the attention and the spotlight on her, but I think she was positioning it in a different way, as a kind of international megastar, Marilyn Monroe-type icon rather than a member of the royal family. And I think the dress really reflected that."

Diana did have some reservations about the dress. Royal biographer Katie Nicholl, who wrote "William and Harry," revealed that the princess was worried it might embarrass her eldest son, Prince William, who was 14 years old at the time.

But her gown has now become a part of fashion history, even going on display at the Victoria and Albert Museum in London.

And there's no doubt it's one of the best Met Gala looks of all time.