"Though the design was inspired by the marine theme that ran throughout the collection, it was insensitive and we made a mistake," he said.
Riccardo Tisci, Burberry's chief creative officer who designed the show, also apologized.
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"I am so deeply sorry for the distress that has been caused as a result of one of the pieces in my show on Sunday," Tisci said in a statement. "While the design was inspired by a nautical theme, I realize that it was insensitive. It was never my intention to upset anyone. ... I will make sure that this does not happen again.”
The description of Burberry's Tempest line posted on the company's website says the pieces drew "inspiration from the contrasts in British culture and weather." But the description doesn't mention the sea or a nautical theme.
Liz Kennedy, who was in the Tempest show, posted pictures of the sweatshirt on Instagram on Sunday, saying she raised concerns about the sweatshirt after leaving "my fitting extremely triggered after seeing this look."
"Suicide is not fashion. It is not glamorous nor edgy," Kennedy wrote. "Let’s not forget about the horrifying history of lynching either. There are hundreds of ways to tie a rope and they chose to tie it like a noose completely ignoring the fact that it was hanging around a neck."
Kennedy said she has gone "through an experience with suicide" in her family, but when she tried to address the issue before the show, she was told to write a letter, and that, "'It’s fashion. Nobody cares about what’s going on in your personal life so just keep it to yourself.'”
She also said in her post that she was further disturbed when the show's staff "briefly hung one from the ceiling (trying to figure out the knot) and were laughing about it in the dressing room."
Gobbetti said he personally called Kennedy to apologize.
Kennedy said that she chose to speak out because the show was "dedicated to the youth expressing their voice."
With her post, she included a screenshot of a post that appeared to have been written by Tisci accompanying a picture of the offending hoodie. "I dedicate this show to the youth of today, to them having the courage to scream for what they believe in, for them to have the beauty in expressing their voice," he wrote. Tisci's post has since been deleted.
Models in Sunday's show walked a standard runway, in a sleek space, and also a runway that weaved through an industrial-looking space bordered with teens climbing scaffolding.