Beauty queen: how Pat McGrath revolutionised makeup

A self-confessed cosmetics nerd, Pat McGrath creates the looks for 80 major fashion shows a year. As she launches her first line, she talks about race, Instagram, her best friend Edward Enninful (the new editor of Vogue) and the influence of her makeup-obsessed mother JeanIn 20 years of interviewing actors, musicians, designers and artists, my audience with Pat McGrath has been the most difficult. Not because she’s chilly or aloof (she’s tactile, warm, prone to outbursts of laughter