Tulisa Contostavlos has been getting on so well with fellow X Factor judge Louis Walsh that she even calls him her “best friend”.

The unlikely duo have bonded sitting on the panel alongside Take That’s Gary Barlow and former Destiny’s Child singer Kelly Rowland at the regional auditions.

“To tell you the truth I’m getting on mostly with Louis Walsh. He’s my best friend, my new BFF – I love him,” she told New! magazine.

The N-Dubz singer added: “Me and him get on like a house on fire. From the minute I met him I clicked so well with him and, you know, he understands my humour and I don’t think he expected me to be the way I am. He even told me he thought we wouldn’t get on as well as we do but we do and it’s brilliant, I love it.”

Tulisa revealed Gary has been “a lot sterner than we thought he would be”.

“The other two judges are great – I love Gary, I love Kelly. I knew Gary from before – I’ve written songs with him in the studio – so yeah, me and Gazza and Kels are cool,” she continued.

The 22-year-old has been through a range of emotions during the audition process, saying: “I’ve been cruel at times. I’ve also been very nice and very emotional sometimes.”