In an interview with Marie Claire, Dalton also made it known that the British princess preferred to do her own makeup rather than rely on makeup artists. Princess Diana in a 1985 portrait. Tim Graham/Getty ImagesDalton confirmed that, "unless she had to take an official portrait or something like that, Princess Diana preferred to do her own makeup. If it was a photo shoot or official photos with Charles or the boys, then yes, there was a makeup artist. As for her signature make-up, it is impossible not to think of the sky-blue pencil with which Diana loved to emphasize her sky-blue irises.