Designer Chris March, who appeared on the fourth season of Project Runway and went on to dress the likes of Beyonc, Lady Gaga, Prince and Meryl Streep, has died at 56.

Sources close to Marchs family told TMZ that he died at 1:45 p.m. Thursday after suffering a heart attack.

March, who also appeared on Project Runway All Stars and briefly had his own show, Mad Fashion, had struggled with his health since June 2017, when he fell and hit his head at his apartment. Afterward, he was placed in a medically-induced coma and faced serious complications.