She described herself as a "nerd" who didn't know what high fashion was,[5] but she told The New York Times it was her way of getting out of Bedford, Texas.

[6] Wallerstedt was signed on sight at a Dallas-area modeling agency called Wallflower Management and debuted as a Proenza Schouler exclusive in 2016.

[7] Her first magazine cover was Vogue Italia and her first campaign appearance was for Prada, considered two of the highest feats in modeling.

[10] She has walked the runway for Fendi, Burberry, Chanel, Tory Burch, Dior, Michael Kors, Louis Vuitton, Tom Ford, Salvatore Ferragamo, Versace, Valentino, and Anna Sui among others.

[13] Wallerstedt has appeared in American Vogue,[14][15] including an editorial about her hometown of Bedford.