Patti Cohen has ended a more than 30-year run at Donna Karan International, stepping down as executive VP/PR & communications, according to WWD.

patti cohenShe was the fashion designer's first hire and exits following the installation of Apple pro Hector Muelas as chief image officer.

Muelas assumed the marketing function that had been Cohen's responsibility.

Caroline Brown, DKI CEO, praised Cohen's contributions to firm.

"She was a constant at the side of Donna Karan from day one and a key member of the executive team," Brown said in a statement. "As an important part of our history, Patti will always be a close friend to this house and we wish her much success in her next steps.”

Cohen worked for Ann Klein before joining Karan with the launch of the label in 1984.