Kelly Brook catwalk for Reebok SS11 fitness collection: The model, who is the face of the brand's EasyTone range, wore figure-hugging leggings and a vest-top as she strutted her stuff in the toning trainers. Boxer Khan donned shorts and a t-shirt for his stint on the catwalk and joined Kelly for a Q&A session after the show.

Last year, Kelly featured on an eye-catching billboard for EasyTone, which showed her wearing just a pair of trainers, lying on her front to cover her modesty. At the unveiling, she said she had used the trainers to help tone her bum before having the pictures taken.

While Kelly may be the official spokesperson for EasyTone, it seems that other celebs can't help raving about them either. Speaking on the red carpet at the Golden Globes, US actress Sofia Vergara told Zap2it.com: 'When I'm not working out, when I can, I wear my very fabulous, fabulous EasyTone Reebok's.

'And I wear them because, you know what, I'm not working out but I at least feel like I'm doing something. You feel like you're doing [something] very good for your legs.