Leon Jackson, who won The X Factor in 2007, quickly faded from the limelight and was dropped by Simon Cowell's Syco record label just two years later.
However, in 2015, it was revealed that the Scottish singer had been hitting the gym hard, undergoing a remarkable physical transformation as he continued to chase his pop career dreams.
Now 35, Leon has swapped his iconic spiky mullet for a more laid-back look and sports a flattering facial stubble. He regularly shares photos of his muscular physique with his Instagram followers, looking vastly different from the slim 19 year old who captured the nation's hearts 18 years ago.
Once known for his Pete Doherty-inspired style of snappy suits and skinny ties, Leon now favours vest tops and fitted T-shirts to showcase his toned body.
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