Top British model Jourdan Dunn has been sporting a honey blonde bob for quite some time now, but has revealed a new blue hairstyle that has her ready for Coachella. âCoachella Ready thank you @rendaattiaâ Jourdan captioned an Instagram image of her icy blue locks with. Dunn joins Hilary Duff as a star who has took the plunge, and debuted blue hair.