At the Los Angeles premiere of “Steel Magnolias” on November 9, 1989, country diva Dolly Parton was a walking embodiment of that decade of excess: skyscraper hair, elongated nails, pneumatic boobs, and a dress smothered in rhinestones. “I kinda patterned my look after Cinderella and Mother Goose — and the local hooker,” she once said, always ready to beat her critics to a punchline.