Claire made her professional stage debut in October 1907 in Elmira, New York. She played Florie in a production of
The Fatal Flower — the beginning of a two-year contract. In 1909, she appeared in a vaudeville act entitled "Dainty Mimic", which included an imitation of actor
Harry Lauder. A booking agent described this act as "one of the best single Acts" he had seen that season and remarked that "She possesses a great deal of magnatism [sic] and is a big hit." She performed on Broadway in the musicals
Jumping Jupiter,
The Quaker Girl (both 1911), and
Lady Luxury (1914-1915). Claire was in the
Ziegfeld Follies of 1915 and 1916. She later starred on Broadway in plays by some of the leading comic dramatists of the 1920s, 1930s, and 1940s, including the roles of Jerry Lamarr in
Avery Hopwood's
The Gold Diggers (1919), Mrs. Cheyney in
Frederick Lonsdale's
The Last of Mrs. Cheyney (1925), Lady George Grayston in
W. Somerset Maugham's
Our Betters (1928), and Enid Fuller in
George Kelly's
Fatal Weakness. 1924 publicity still for
The Greeks Had a Word for Them (1932), lying in her evening gown in a seductive pose, which provoked outrage from civic and religious leaders. Claire later became identified with the high comedies of
S. N. Behrman, and created the female leads in three of his plays:
Biography (1934),
End of Summer (1936), and
The Talley Method (1941). Behrman wrote of Claire's performance in one of his comedies: "Her readings were translucent, her stage presence encompassing. The flick of an intonation deflated pomposity. She never missed a nuance." Critic
J. Brooks Atkinson praised Claire for her "refulgent comic intelligence". Claire was retired from the stage for five years in the early 1940s, living with her husband in San Francisco. She returned to perform in the comedy
The Fatal Weakness. Her last stage appearance was as Lady Elizabeth Mulhammer in
T. S. Eliot's
The Confidential Clerk (1954). She made her film debut in
Cecil B. DeMille's
The Wild Goose Chase (1915). She is best remembered today for her role as the Grand Duchess Swana in the romantic comedy
Ninotchka (1939), directed by
Ernst Lubitsch and starring
Greta Garbo. ==Death==