showbiz gossip straight to your inbox with the Daily Star's FREE newsletterAlthough many of the Harry Potter cast included icons like Maggie Smith, Gary Oldman, Julie Walters and Alan Rickman, the students were mostly newbies in the industry.Rupert Grint was the oldest of the troublesome trio at 12-years-old during the time of filming, while Daniel Radcliffe was 11, Emma Watson was just 10-years-old during filming and turned 11 when the film was released.The films were done over a span of 10 years, allowing fans to watch the youngsters grow into adults who started to take on other projects - and the doors were burst wide open once they wrapped up the films.
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