Blackwell died Sunday of complications from an intestinal infection, publicist Harlan Boll said.
Blackwell, whose first name was Richard, was a little-known dress designer when he issued his first tongue-in-cheek criticism of Hollywood fashion disasters for 1960 — long before Joan Rivers and others turned such ridicule into a daily affair.
Year after year, he would take Hollywood's reigning stars and other celebrities to task for failing to dress in what he thought was the way they should.
Being dowdy was bad enough, but the more outrageous clothing a woman wore, the more biting his criticism. He once said a reigning Miss America looked "like an armadillo with cornpads."