Robert Gordon Mackie is an American fashion designer and costumier, best known for his dressing of entertainment icons such as Ann-Margret, Lucille Ball, Carol Burnett, Diahann Carroll, Carol Channing, Cher, Miley Cyrus, Doris Day, Marlene Dietrich, Barbara Eden, Lola Falana, Farrah Fawcett, Judy Garland, Mitzi Gaynor, Elton John, Julia Louis-Dreyfus, Bette Midler, Liza Minnelli, Marilyn Monroe, Marie Osmond, Dolly Parton, Diana Ross, Barbra Streisand, Donna Summer, Tina Turner, Dottie West and Oprah Winfrey, among others.