French fashion designer Manfred Thierry Mugler dead at 73 Monday, January 24 by ABC NewsFrench fashion designer Manfred Thierry Mugler has died, a statement on his official Instagram account confirmed Sunday. He was 73.The cause of his death was not disclosed.Mugler was known for his adventurous, theatrical designs, which have been worn by supermodels, Hollywood royalty and fashionistas... Read More.