The supermodel BFFs have been running from show to show looking amazing, but their latest catwalk appearance for Balmain has got everyone talking...
Because they swapped hair colours.
It's seriously weirding us out. Luckily, their new looks are down to some super realistic wigs rather than the work of a heavy-handed hairstylist.
And they're not the only ones to have a hair makeover. Perma-blonde models Rosie Huntington-Whiteley and Lily Donaldson were converted to the dark side.
Check out more looks from the runway in our gallery below: