Go Youn-jung became the ambassador for Chanel Beauty, featuring in Harper’s Bazaar Korea's July cover shoot showcasing Chanel's luxurious Rouge Coco Flash lip products.

Go Youn-jung became the muse for Marithé François Girbaud in November 2022. In May 2025, she starred alongside Cha Eun-woo in the campaign 'Call my name, MARITHÉ FRANÇOIS GIRBAUD,' which garnered an impressive 17 million cumulative views within just 10 days of airing.