By Joel Leaver Simon Cowell is almost unrecognisable in photos that have been unearthed from earlier in his career, which show him modelling much longer hair than he sports nowadays. The entrepreneur, now 64, began his career in the music industry more than four decades ago and he’s gone on to launch shows like the X Factor. Over the course of his time on TV, since being a judge on Pop Idol in 2001, he’s had short hair. He however previously had a longer hairstyle. Various photos of Simon from earlier in his career have resurfaced in recent years, including some of him with his now ex-partner …