This elfin actress first displayed her gamine-like beauty in the movies with Peter Chelsom's romantic comedy, "Hear My Song" (1991), but she has earned her stripes on stage and TV as well. The Sussex-born daughter of a photographer and a poet (and the grand-niece of actress Geraldine Fitzgerald), she had a bohemian upbringing and entered London's Drama Centre in 1986.Fitzgerald subsequently lent her ethereal qualities to "Sirens" (1994) as the wife of a clergyman (Hugh Grant) seduced by the bohemian lifestyle of eccentric artist Norman Lindsay (Sam Neill). In the offbeat British production "A