You could say that Kendall Jenner and Gigi Hadid are two peas in a pod. The model best buds got to share the first-time experience of walking in the Victoria's Secret Fashion Show together this year, showed off their silly side with Vogue in an adorable selfie stick video, and have been taking fashion month by storm right at each other's side. But recently, the girls proved that they're even closer besties than we thought by actually trading hair colours with one another at the Balmain Fashion Show. While both looks are a temporary change, we love seeing the girls channel each other's beauty looks, even if just for a day. See the models rocking their new hues below!