Mel B and Mel C recently performed with their fellow Spice Girls at the Olympic Closing Ceremony

Mel C has thrown her support behind Mel B's recent stint on The X Factor, likening her to a good-looking Simon Cowell'.

Scary Spice gave some feisty feedback as a guest judge on the show and her fellow Spice Girl was impressed by her honesty.

I'm really proud of Mel B,' Mel C, 38, tells ITV.

She's brutally honest and telling it like it is. I love her bluntness - though I wouldn't have the guts to say what she does.

She's like a good-looking Simon Cowell.'

Despite receiving some criticism for being too harsh, Mel B proved a big hit with many viewers who are even calling for her to get a permanent seat on the panel.

An online poll showed that Mel, 37, was more popular than fellow guest judge Rita Ora and new panellist Nicole Scherzinger.

And many Twitter users expressed their love for Scary Spice, with one passionate fan Tweeting: They should replace Tulisa with Mel B PERMANENTLY.'

Mel is currently a full-time judge on the Australian version of The X Factor.

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Anna Francis