In 2017, Jeannelly took her first steps into the fashion industry by becoming a dresser for several shows during Fashion Week, while continuing her fashion studies and simultaneously working in retail for mid-range, high-end, and luxury brands.

In 2020, she graduated as a fashion designer and co-founded the fashion media and magazine JusteUnDétail.

The year 2023 was a breakthrough for her : she was responsible for styling the first runway show of the brand Edsar and also worked as an assistant stylist for the lookbook. Since then,she has showcased her talent as a stylist, art director, editor-in-chief, and personal shopper.