Kendall Jenner and Gigi Hadid are trading places!

The models swapped their hair colors today for Balmain's Paris Fashion Week show -- and the Internet went crazy! Everything is topsy turvy!

The normally brunette Kendall made head turns with her blonde locks with dark roots, while Gigi was all over the chocolate brown tresses.

In the image tweeted by Olivier Rousteing's fashion house, the pair don sky-blue ensembles, before they walked the catwalk in the not-to-be missed show. Along with the image, the Balmain account tweeted, "A blonde @KendallJenner and a brunette @GiGiHadid backstage #BALMAINFW16."

In addition to the hair switch -- Kendall's nips also got some attention to! Hello ladies!