Sam McKnight, is the hairdresser of all hairdressers. Sam’s legendary career spans over four decades and he has worked on everything including, fashion week catwalks, fashion magazine covers and has been hired by luxury fashion brands such as Chanel, Fendi, Balmain, Burberry and Tom Ford.  Sam is also a regular contributor to both British and international Vogues, W, Harper’s Bazaar, Vanity Fair, i-D and Love, he has over 100 covers to his name from British Vogue alone. If that's not enough, he was behind Princess Diana's iconic short, slicked back hairstyle in the famous 1990 shoot for British Vogue and later worked as her personal hair stylist for seven years. In this conversation, Sam talks to Bobbi about how he began his journey as a male hair dresser, and how being positive is a key component of success. Sam also has a line of hair products for purchase in the UK, Hair By Sam.