Simon Cowell Calls Olly Murs A "True Star" As He Continues Chart Reign

26 November 2012, 15:09 | Updated: 27 November 2012, 12:32

The X Factor USA judge tweeted the former The X Factor star about his latest single 'Troublemaker'.

Simon Cowell has congratulated Olly Murs following the success of his new single 'Troublemaker'.

The song, which is the first single to be taken from The Xtra Factor host's new album, is currently spending its second week at the top of the Vodafone Big Top 40.

Simon Cowell wrote: "Hi Olly Murs. Congratulations on your number one single today. You are a true star and a great guy. Proof success doesn't change you."

Olly, who was mentored by Cowell on The X Factor in 2009, replied: "Thanks boss!!" and retweeted Simon's message.

The song held off competition from One Direction and Girls Aloud to retain its position at the top of the Vodafone Big Top 40 on Sunday (25th November).

"I feel like it's had the best response for a lead single yet," Olly told Digital Spy. "Everyone's talking about it, and a lot of people who weren't keen on me before are telling me they like it.”

He added: "It seems to be broadening the audience, which is always a good thing."