Caroline Louise Flack was born in the Enfield area of Greater London on 9 November 1979, the youngest of the four children of Coca-Cola sales representative Ian Flack and his wife, Christine (née Callis). Shortly after her birth her father was promoted to the company's management, and the family moved to Thetford, Norfolk. When Flack was seven, they moved again to nearby East Wretham. Flack and her twin sister, Jody, were born when their sister Elizabeth was 10 and their brother Paul, eight. Jody, the elder twin by six minutes, was originally supposed to be called Caroline, but her mother decided the name did not suit her. Flack attended Great Hockham Primary School and Wayland Community High School in Watton, Norfolk. She developed an interest in dancing and performed in village pantomimes while at school. While at school she was given medical treatment for being "very underweight". Between 1996 and 1999 she studied dancing and musical theatre at the Bodywork Company in Cambridge.