New Zealand's much-loved lesbian sisters Jools and Lynda Topp will be in concert again next month - and their one night at Auckland's Powerstation will be filmed for an upcoming documentary on the talented twins. Untouchable Gals: The Topp Twins Tickets are now on sale for their Tuesday 8 April concert, which will provide footage for Topp Twins - Untouchable Girls, a movie-length documentary on the lives of the sisters, funded by The Film Commission. Elvira Kurt, a Toronto-based comedian popular with gay and lesbian communities in Canada, will also be on stage to support the twins at their Powerstation show. Jools Topp was named Women's Weekly #1 Woman We Love last year, after a brave battle with breast cancer.