Mary first met Diana in 1991, when she was asked by Anna Harvey - then head stylist at Vogue - to do her make-up for a shoot with Patrick Demarchelier, one of the magazine's most celebrated photographers, for the December issue.
Mary kohtus Dianaga esimest korda 1991. aastal, kui Vogue'i toonane peastilist Anna Harvey palus tal teha Dianale meigi enne detsembrinumbri fotoseanssi ühe ajakirja kõige hinnatuma fotograafi Patrick Demarchelier'ga.