Simon Cowell furious with diva Mariah Carey

Simon Cowell was furious after superstar Mariah Carey threw X-Factor rehearsals into chaos - by keeping contestants waiting THREE HOURS for a surprise mentoring session.

The hopefuls had to sit in the bar at London's posh Dorchester hotel waiting for the US singer, 38. And when they did meet Mariah most were so overcome they CRIED with emotion.

But Cowell blew his top when Friday's meeting made them all late for rehearsals - and 16-year-old Eoghan Quigg had to miss them altogether because he's not allowed on set after 7pm on weekdays.

An X Factor insider said: "Simon was furious about the delays and really annoyed with Mariah. He just wanted the hopefuls to meet the star and get back to the studios.

"He got so frustrated at one stage he ordered an assistant to go to the Dorchester and order the contestants into their limos."

Via mirror.co.uk