The Council of Fashion Designers of America is urging fashion houses not to hire models under 18 for New York Fashion Week next month.

An email blast went out from the organization’s head, Steven Kolb, on Monday, telling fashion pros: “As you cast your New York Fashion Week shows, please remember to promote diversity and inclusion, on and off the runway. American fashion can lead the path. Additionally, we strongly encourage you to support the well-being of younger individuals by not hiring models under the age of 18 for runway shows, and to create areas backstage for models to change in privacy.”

The move comes after Vogue vowed last year to stop hiring minor models.

Kolb has also campaigned for private dressing rooms for models backstage at all fashion week venues.