Lynne Kera Barnett (born 1945 - died early 2017) as Lyn Barnett was a New Zealand singer who had success in her home country. Later she moved to Australia and also became popular there. She made many appearances on Australian TV. She had a hit with a cover of "Please Mr. Postman". She was also the sister of singer Christine Barnett. She died some time in early 2017.