It seems Cheryl is giving Mr Nasty Simon Cowell a run for his money at this year's X Factor Boot Camp, with sources claiming the star was booed again yesterday (August 10).

Following reports that the new Mrs Fernandez-Versini upset the crowd at last week's arena auditions, a Digital Spy reporter has now claimed that the audience strongly disagreed with some of Chezza's decisions during the six chair challenge at Wembley.

[related]Cheryl - who has been given the girls category - reportedly responded to the negativity by shouting: "Oh boo you", while also blowing raspberries into her mic and giving a thumbs down to audience.

The 31-year old also hit back: "That's my decision," before telling the crowd that she has to have a 'personal connection' with theact that she decides to put through.

Cowell also rushed to defend the Crazy Stupid Love singer, telling the audience to calm down and "respect what Cheryl does" as the process is hard and stressful.

DS adds that after receiving backlash from the crowd, she went on to make another shock decision during filming!

You can see more from Cheryl, Simon and fellow judges Mel B and Louis Walsh when X Factor returns to ITV later this month.