Irina Shayk broke one of Karl Lagerfeld's fashion rules by wearing sweatpants, which the designer called 'a sign of defeat,' to a Met Gala after-party

• Irina Shayk wore gray sweatpants to a Met Gala after-party on Monday.

• Designer Karl Lagerfeld once called sweatpants "a sign of defeat."

• The 2023 Met Gala theme was "Karl Lagerfeld: A Line of Beauty."

Irina Shayk broke one of Karl Lagerfeld's fashion rules by wearing sweatpants to a Met Gala after-party Monday night.

After attending the 2023 Met Gala — where the theme was "Karl Lagerfeld: A Line of Beauty" in the late designer's honor — Shayk stepped out wearing a white tank bodysuit and gray sweatpants.

In his 2013 book, "The World According to Karl," Lagerfeld wrote: "Sweatpants are a sign of defeat. You lost control of your life, so you bought some sweatpants."

The book is a 176-page compilation of all of Lagerfeld's most buzzworthy quotes about fashion and life.

In addition to sweatpants, the model kept on her diamond Ana Khouri necklace that she wore on the red carpet with her cream Yohji Yamamoto gown, in addition to swapping her flats for $6,000 Jimmy Choo x Timberland boots.

In his lifetime, Lagerfeld was outspoken about other clothing items he despised too, like flip-flops.

"I hate sloppy footwear. What I hate most is flip-flops. I am physically allergic to flip-flops," Lagerfeld reportedly told M Magazine in 2012.

Lagerfeld, who died in February 2019 at the age of 85, remains a polarizing figure in the fashion world that people either condemn or celebrate. The German fashion designer had a long history of making controversial comments that denigrated fat people, Syrian refugees, and the #MeToo movement. Despite that, he is still regarded as one of the most iconic figures in the fashion world of all time, known for serving as creative director for Chanel and Fendi.

In the lead-up to the Met Gala, creators had wondered aloud if someone would walk the carpet in sweatpants in response to the designer's aversion — and those who recognized a potential connection between Shayk's choice and Lagerfeld's quote seemed delighted, with the model landing on quite a few best-dressed lists.

"I would have loved to see this on the carpet," TikToker @tasteofchidera told her 37,000 followers on May 2, "but I'll take it for the after-party. This is just so chef's kiss."

Representatives for Irina Shayk did not immediately respond to Insider's request for comment.

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