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I believe you may be referring to Erté (born Romain de Tirtoff), the renowned Art Deco artist and designer. Erté was a Russian-born French artist who became one of the most influential figures in Art Deco design, known for his elegant fashion illustrations, theatrical costume designs, and luxurious decorative works characterized by flowing lines, exotic motifs, and glamorous figures. He achieved international recognition through his covers and illustrations for Harper's Bazaar magazine spanning nearly three decades, while also creating costume and set designs for the Folies Bergère, Metropolitan Opera, and numerous theatrical productions. Erté's distinctive style epitomized the sophistication and luxury of the Jazz Age, and his work significantly shaped 20th-century fashion illustration and decorative arts, making him an enduring symbol of Art Deco elegance and theatrical glamour.