Angus, Thongs and Perfect Snogging, as told by its stars: ‘I still get asked – are you Slaggy Lindsay?’

• FLASHBACKS: Fifteen years ago, a British comedy about the pressures of being a teenage girl became a generation-defining hit. To celebrate its birthday, Isobel Lewis spoke to director Gurinder Chadha and many of its stars – including Georgia Groome and Eleanor Tomlinson – about on-set crushes, sneaky fag breaks and coming of age