Ivy Janet Aitchison (1886 â 8 November 1971) better known as Ivy St. Helier, was a British stage actress, composer and lyricist.
St. Helier was born in her namesake, Saint Helier, in Jersey.
On the stage, St. Helier played Manon la Crevette in the original production of Noël Coward's operetta Bitter Sweet (1929), a role she reprised in the 1933 film version. She also starred in Coward's revue Words and Music. As a lyricist, she wrote additional songs for The Street Singer, and for The Blue Train, the London musical by Reginald Arkell, Dion Titheradge and Robert Stolz.
She made five films, including Laurence Olivier's Henry V (1944) and London Belongs to Me (1948).
St. Helier died on 8 November 1971 in London, England.