Alexandra Burke thinks about X Factor new judge Tulisa Contostavlos

Alexandra Burke thinks about X Factor new judge Tulisa Contostavlos will give the X Factor 'swagger and edge'.

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The singer thinks N-Dubz star Tulisa as a judge and mentor on the job when the program will return on Saturday - programs other judges, past or present to any one will feel very different.

She said: 'Tulisa will give it that swagger and edge no other judge has ever been able to give. She knows what the kids want and what's cool and she's going to give the show a whole new edge. She'll produce some great acts.'

The Hallelujah hitmaker, was former judge Cheryl Cole in 2008, mentored by the show was to win - also thinks Take That star Gary Barlow's panel that Kelly Rowland, former Destiny's Child singer and judge Louis Walsh are returning will be a great addition.

She added: 'When I found out Gary Barlow was going to be a judge I was like, "Gary Barlow all the way".

'I think the new line-up will be fantastic for the show, it's fresh.'

It was also announced today that the final show in London for the first time in 12,500 capacity Wembley will take place.

Alex added: 'We can finally put the rumours to be and I can confirm that The X Factor final will be held at Wembley Arena.

'Everyone wants to go to the final and it means thousands of people can go rather than a couple of hundred like before.'