By 1859, English newspapers such as Punch were satirising the extent to which William Perkin’s vivid shade of purple, mauveine, was dominating fashion, likening it to a case of measles. Considering this claim, analysis of the dyes present in four nineteenth-century purple dresses was undertaken in an effort to identify aniline dyes in the NGV collection. Fibre samples from each dress were analysed by chemist Dr Jeff Church from CSIRO. Thin-layer chromatography and surface-enhanced Raman spectroscopy identified that the silk in this dress was dyed with methyl violet, a dye synthesised in 1861 by chemist Charles Lauth, four years after the discovery of mauveine.