X Factor 2010 may be over but Simon Cowell has reportedly carried on his judging role whilst on holiday in Barbados.

The music mogul, who is on holiday at the Sandy Lane resort with fiancée Mezhgan Hussainy and ex-girlfriends Sinitta and Jackie St Claire, is said to have delivered some harsh comments during a game of karaoke.

A source told the Daily Mirror: "When Sinitta sang, he told her she sounded like a 'fire going off in a pet shop' because she was so squawky."

However, the 51-year-old was far kinder to his fiancée, who sang Whitney Houston's 'I Will Always Love You', telling her "I didn't like that, I loved it".

Meanwhile, it has been reported that ex-girlfriends Jackie and Sinitta have been arguing on holiday, much to the distress of Simon, who was eager for a relaxing break after a busy year.