He was uncredited as hair stylist for Vivien Leigh in "Gone With the Wind" (1939). Grace Kelly chose Guilaroff to style her hair for her 1956 wedding to Prince Rainier of Monaco. When Lena Horne filmed her introductions to her scenes in the MGM musical documentary "That's Entertainment! III" (1994), she requested that Guilaroff come out of retirement to style her hair, some 50 years after he first styled it in "Cabin in the Sky" (1943). Over his long and distinguished career, Guilaroff's clients included Elizabeth Taylor, Judy Garland, Lana Turner, Greta Garbo, Lena Horne, Greer Garson, Debbie Reynolds, Ann-Margret, Barbara Stanwyck, Cyd Charisse, Marilyn Monroe, Katharine Hepburn, Ingrid Bergman, Hedy Lamarr, Kathryn Grayson, Liza Minnelli, Clare Booth Luce, Ginger Rogers, Debbie Reynolds, Geraldine Page, Libby Holman, and Nancy Reagan. He was the stylist of choice for such male stars as Cary Grant, Clark Gable, Fred Astaire, James Stewart, Spencer Tracy and Frank Sinatra. Guilaroff won a Primetime Emmy Award for Outstanding Achievement in Hairstyling for a Miniseries or Special for "The Two Mrs. Grenvilles" (1987) starring Ann-Margret and Claudette Colbert. Guilaroff never married. In 1938, he became the first single man in the United States to adopt a son whom he named Jon in honor of Joan Crawford. The adoption was opposed by the state of California, which took legal means to prevent the adoption. Guilaroff, however, ultimately prevailed and subsequently adopted another son and some years later a third son, who had been a former employee. In his memoir "Crowning Glories", Guilaroff claimed he had romantic affairs with Greta Garbo and Ava Gardner. Guilaroff died in Beverly Hills, California on May 25, 1997 at age 89.