Her international modeling career began in 2011 when she debuted for the Givenchy Haute Spring Show.

[3] She started her international modeling career shortly after in the same year, when she appeared in the Givenchy F/W 2010 campaign, shot by Mert Alas and Marcus Piggott.

Xi also participated in the Met Gala red carpet with Kors and Huntington-Whiteley.

[6] In 2015, Olivier Rousteing, creative director of Balmain, invited Xi to model the Balmain 2015 Fall runway along with Alessandra Ambrosio, Adriana Lima, Constance Jablonski, Taylor Hill, Joan Smalls, Cindy Bruna, Jourdan Dunn, Karlie Kloss, Magdalena Frąckowiak, Devon Windsor, and Lily Donaldson.

[7] In 2015, Karl Lagerfeld selected Xi to star in a new campaign for his label, and cooperated with Kendall Jenner and Sasha Luss.