The model, who was famously pictured taking what appeared to be cocaine during a party in 2005, told the audience at the launch of the partnership that she has “always loved coke”.
Moss wore a leopard print shirt and high waisted black trousers to the event. The look was completed with a thick waist belt, red lipstick, and slicked-back hair.
The 48-year-old hit the DJ decks at the event on Wednesday (20 July) and reportedly sang Diana Ross’s “Endless Love”.
Diet Coke said Moss has been brought on as creative director for her “unique aesthetic and style”. She has designed four new cans as part of the collaboration.
During the event, Moss said: “The campaign connected with me instantly as I am a firm believer that with confidence and passion, you can achieve your wildest dreams.
“I am thrilled to join the Diet Coke family – I love the past collaborations they’ve done with such incredible names in fashion.”
The former supermodel also appeared in an interview with British Vogue on Thursday (21 July) as she dispensed some fashion advice for younger generations.
“They’re all scared to be themselves and I think they should dress as they want,” Moss said.
She added: “Never wear a [nipple] pasty! That’s my advice to the younger generation.”
Moss made headlines in May when she was called as a witness in the Depp v Heard case, which saw a jury find Johnny Depp’s ex-wife Amber Heard liable for defamation.
During the trial, which Moss joined via video call, she denied Heard’s claim that Depp had pushed her down a flight of stairs during their on-again, off-again relationship in the nineties.
The model said at the time that Depp “never pushed me, kicked me, or threw me down any stairs”.