X-Factor fans have accused Simon Cowell of ripping off Gamu Nhengu's version of a Katrina And The Waves song for his X Factor USA contestant Rachel Crow. Last year, Gamu, 20, performed a memorable version of 'Walking On Sunshine' which she changed to 'You Are My Sunshine' in front of X Factor UK judges including Cowell, Cheryl Cole, Geri Halliwell and Louis Walsh.
