Adele Astaire (1896–1981) was an American singer, dancer, and actress, renowned for her contributions to the Broadway musical scene alongside her brother, Fred Astaire. Although primarily celebrated for her performances in musical theatre during the early 20th century, her genre encompassed Broadway, jazz, and popular music. Adele gained prominence in the 1910s and 1920s, showcasing her talent in productions such as “Over Here!” and “Funny Face.” Her collaboration with Fred in shows like “Lady, Be Good!” and “Rosalinda” helped establish them as a formidable duo. Adele's charm and stage presence were pivotal in setting the standard for future musical performances, influencing generations of performers. In the 1930s, she retired from the stage after marrying the wealthy British lord, Charles Cavendish, and moved to England. Despite her exit from the limelight, Adele Astaire's impact on musical theatre is significant; she laid the groundwork for the integration of dance and music in performances, a hallmark of Broadway that persists today. Her legacy is often overshadowed by her brother's fame, yet she remains an important figure in the evolution of American musical theatre.