It’s no surprise that McCartney was made to question things. Though she may not have grown up with any strict dietary concerns, she's certainly making new ones for customers who are keen on shopping as consciously as they eat. "Why do we have to use all of those chemicals to treat leather? Why do we have to cut down all those rainforests to eat meat? We don’t actually have to, do we? We’re living in 2018 — surely the technology and compassion can work to our advantage. Because the end goal is to have more time on this planet, isn’t it?" She adds: "It fascinates me that everyone doesn’t look at the world in that way, that people are still ridiculing vegans and are so uncomfortable with people who look at things differently. For me, it’s the way the world should be."