The model and actress, 31, attended the star-studded Vogue World: London afterparty at George Club in Mayfair on Thursday, sporting a multi-colored spiked hairdo and a similarly punk-inspired outfit.
Consisting of a purple cardigan, a white T-shirt and purple briefs layered over a white pair and worn with black ripped tights, Delevingne accessorized the look with multiple rings and necklaces. But it was her multi-colored hair that really stole the show.
With pink, green, yellow and red sections, brown ends and sections spiked up into a crown-shaped mohawk, the actress' rainbow locks were as bold as they were eye-catching.
During the main event, Delevingne briefly appeared on the Vogue World stage at the Theatre Royal Drury Lane and kissed FKA Twigs during her performance.
In a clip from the night posted on the Vogue Magazine page on X (formerly known as Twitter), Delevingne joined the singer on stage and briefly kissed her on the lips before Twigs continued with her performance.
The actress wore a leather jacket over a black and red oversized sweater and white shirt, teamed with ripped fishnet stockings and black boots, while Twigs sported a cutaway LaQuan Smith bodysuit.
Marking the start of London Fashion Week, Vogue World: London highlighted the city’s heritage and support for the performing arts industry, with profits going towards organizations in performing arts.
Stars who were in attendance included Princess Beatrice, Princess Eugenie, Sienna Miller, Kate Winslet, Kate Moss, Jodie Turner-Smith, Naomi Campbell, James Corden and film director Baz Luhrmann.
Vogue editor-in-chief Anna Wintour and British Vogue editor-in-chief Edward Enninful were also present for the star-studded event.
“The arts are under threat in the UK,” Wintour told The Guardian. She went on to add that Vogue World was “a timely reminder of how important they are, how vital a part of our lives, and how much they need our support.”
Revealing her baby bump, Miller looked stunning as she wore a white cropped, long-sleeve top and a matching voluminous skirt.
The actress, 41, who is expecting her second baby with boyfriend Oli Green, 26, and shares daughter Marlowe, 11, with her ex, actor Tom Sturridge, was photographed displaying her bump in Ibiza in August.
The fabulous fashion event also saw iconic supermodels of the '90s, Cindy Crawford, Christy Turlington, Linda Evangelista and Campbell — reunited to close out the Vogue World: London show.
As Annie Lennox performed a "Sweet Dreams" medley, the foursome appeared on stage and joined hands before taking a lap around the theater.
Crawford, 57, Turlington, 54, and Evangelista, 58, all chose metallic shades for their dresses, while Campbell, 53, wore a forest green dress with cutouts. The crowd provided raucous applause for the quartet of supermodels, who were then presented with bouquets of red roses.