Hazel O'Connor wore some of her own clothes to play her character of Kate. O'Connor also sang all her songs for the film and wrote thirteen tracks for the movie. The film was O'Connor's first major movie acting role and was her breakthrough film performance.
According to Hazel O'Connor's personal web-site, "In 1980, her performance as Kate in Breaking Glass (1980) won Hazel the Variety Club of Great Britain Award for 'Best Film Actor' and BAFTA nominations for 'Best Newcomer' and 'Best Film Score.' The album of the same name went Gold and was number 5 in the UK charts for 28 weeks and produced several hit singles, the most successful being the haunting 'Will You'."