The singer teamed her Michael Kors suit with a black shirt – just like Cara did for a Karl Lagerfeld dinner at Harrods back in March. But Ms Delevingne has long been a fan of the white suite, opting to wear another beautiful Burberry jacket-and-trouser combo to an event in China earlier this year.
Although the two friends haven't spent so much time together recently, it's clear that they still share a similar taste in clothes.
But they're not the only two who have become enamoured with the Saturday Night Fever look of late – Anna Dello Russo, Miley Cyrus and Karlie Kloss have all proved fans of the bright white suit.
It's a tricky one to pull off, so if you want to look more Rita Ora than John Travolta, we suggest you keep the trousers skinny and your lapels modest.
By Olivia Marks