14-year-old Mia Thermopolis is still coming to terms with the fact that she's a princess and heir to the throne of Genovia! But when she announces on national TV that her mum is pregnant by her algebra teacher and plans to marry him, a right-royal fuss results! For now Mia's dreadful old Grandmere is all set to plan the year's biggest society wedding, with every A-list celeb invited, from the Reagans to Phil Collins. But will the bride and groom turn up?