The Nolans
The Nolans are an Anglo-Irish girl group consisting of a group of sisters. The group, best known for their song "I'm in the Mood for Dancing", gained prominence as guest performers on numerous television shows in the United Kingdom. The majority of their charted singles and albums occurred in the early 1980s but they continued to be active until 2005 and were particularly successful in Japan. The sisters have pursued varying solo careers in acting, music and television presenting. In 2009, The Nolans reformed for a one-off concert tour in Ireland and in the UK, spawning an album and DVD.
source: Wikipedia