Oleg Cassini was a renowned fashion designer, best known for his elegant and sophisticated women's clothing. Born in 1913 in Paris, France, he moved to the United States in the 1930s, where he gained fame for his innovative designs. Cassini became particularly famous for dressing Jacqueline Kennedy, the First Lady of the United States, during her husband's presidency, which helped elevate his status in the fashion world. In addition to his work in fashion, Cassini also ventured into other creative fields, including costume design for films and television. His unique style combined classic elegance with modern flair, making him a significant figure in American fashion history. Cassini's legacy continues to influence designers today.