Stella McCartney’s S/S ’19 tie-dye denim boiler suit may go down as the boiler suit that spawned thousands more. In 2019, the 100-percent cotton denim, zip-front one-piece was a go-to showpiece for street style stars and helped usher in a utilitarian workwear trend that’s holding strong in the women’s denim category.

And McCartney’s influence didn’t end with fashion. In 2019, the ethical designer spoke out against unnecessary home laundering, debuted the first fully recyclable hoodie and confirmed that sustainable fashion has a place in luxury when she inked a deal with LVMH to further develop the Stella McCartney House.

The partnership was described as “the beginning of a beautiful story together” by Bernard Arnault, LVMH chairman and CEO. “A decisive factor was that she was the first to put sustainability and ethical issues on the front stage, very early on, and built her House around these issues,” he said.