"Do your homework, go online, visit every museum, and intern. You just need to have a love for what you’re doing. It’s not about thinking that it’s the cool thing; it’s about really believing in it," she says.

Karl follows up, “Ask yourself, Are you sure this world is for you? And are you sure you are the right person to survive in this world—the world of fashion, a world with no rules, no laws?”

The Teen Vogue Handbook: An Insider’s Guide to Careers in Fashion