Guyenz was born in Berlin, Germany, and speaks multiple languages in addition to German, including English, French, Ancient Greek, and Latin, which she learned as a student at Evangelisches Gymnasium zum Grauen Kloster, a humanist school.
[3] She was discovered by PARS Management's Peyman Amin, a former judge of Germany's Next Topmodel,[4] while shopping with her mother in Berlin.
[5][6] She has also walked the runway for designers Chanel, Oscar de la Renta, Emporio Armani, Isabel Marant, Elie Saab, Dolce & Gabbana, John Galliano, Versus (Versace), and Giambattista Valli.
[8] In summer 2017, she appeared in an H&M advertisement alongside Luna Bijl, Birgit Kos, Mayowa Nicholas, and Maartje Verhoef.
[10] Representing a newcomer, in contrast to the established Joan Smalls, she appeared in a campaign for Italian brand Liu Jo.