The 20-year-old beauty, who has been given the title by W magazine, said she is reluctant to "force her career" on to other people.
"All the companies I work for want me to guarantee how much I'll post for them. But I'm not going to force my career onto the people who follow me. I refuse to do 40 Instagram posts about any campaign," she wrote on Instagram.
The stunning blonde - who, along with close friends Kendall Jenner and Cara Delevingne, is taking the modelling world by storm - is also adamant she's more than just a pretty face.