LOS ANGELES, CA. (THECOUNT) — Chris March, a costume designer who appeared on “Project Runway” — and dressed huge stars like Beyonce and Meryl Streep, has died, TMZ has confirmed.

Sources close to Chris’ family say March, 56, died Thursday afternoon at 1:45 PM from a heart attack. The Mad Fashion star had been in and out of the hospital for the last year, but the heart attack came as a surprise to doctors and relatives.

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Despite his medical battles related to a nasty fall suffered 2 years ago, Chris was still designing dresses until the end, reports TMZ.

Chris was a finalist on season 4 of “Project Runway” … he also appeared on “Project Runway All Stars” and had his own show on Bravo called “Mad Fashion.” He also made cameos on “The Real Housewives of New York City” … helping find elaborate costumes for Sonja Morgan.