Posen will be designing new uniforms for the airline’s staff, and will be advising on new uniforms for many other uniform-wearing employees of the company.

“With Zac’s talent and expertise, and in partnership with Delta people worldwide, we look forward to creating a timeless, fashionable and functional new collection that will continue to be a point of pride and symbol of our brand for the 170 million customers who fly with us each year,” said Tim Mapes, Delta’s senior vice president for marketing, in a statement.

Pilots were not mentioned in Delta’s press release. The new uniforms are expected to debut in early 2018.

In a recent report, Delta had quarterly adjusted pre-tax income of $594 million.