The pals turned up together, stopping to pose for photographs. Cara, 21, was channelling androgynous chic in a white tuxedo teamed with a black shirt unbuttoned to the navel.
Peep-toe ankle boots and a splash of red lipstick completed the look.
The two stunning models attended Karl Lagerfeld's fragrance launch
After sitting down for dinner, the pair started pulling silly faces as they took photos of each other on a retro camera.
It was a busy day for Chanel designer Karl Lagerfeld. Earlier on, he had celebrated the opening of his first London store on Regent's Street.
Famous faces included Princess Beatrice, Pixie Lott and David Gandy turned up to celebrate the launch.
The girls and their friend Amber Le Bon pulled silly faces for a selfie
Speaking about his new scent to Marie Claire recently, Karl said, "Today's fashion is no longer simply about clothing. It is about the whole package – not just accessories or glasses, but fragrances, too.
"It is important for a brand to have its own signature perfume. A fragrance is as important as a piece of clothing."
Karl recently spoke about his new eponymous scent for men and women telling Marie Clare magazine he had created 'fashion for the nose' with his new signature scents.
The fragrances, which start at £32 for 25ml, are now available exclusively at Harrods until 23 March and nationwide from 24 March.