The Princess Diaries, the Garry Marshall film that put Anne Hathaway on the map, marks the 20th anniversary since its 2001 release. The gist of the film sees the shy Mia Thermopolis (Anne Hathaway) learning that she’s actually the heir to the throne of Genovia. Imagine living your entire life not knowing that you’re royalty! How her mom, Helen Thermopolis (Caroline Goodall), managed to hide this is beyond me! Everything changes for Mia when her…"The Princess Diaries Marks 20th Anniversary"