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<p>** Note: This episode contains "Frozen 2" spoilers.</p> <p>"Frozen" became the top-grossing animated feature of all time after its 2013 release, so creating a sequel to the beloved film about two royal sisters' unbreakable bond wasn't something "Frozen 2" writer/director Jennifer Lee took on lightly. Lee talks with ABC News' Ginger Zee about the challenges of crafting a new adventure for Anna, Elsa, Olaf, Kristoff and Sven, and being a creative leader at Walt Disney Animation Studios.</p> <p>Learn more about your ad choices. Visit <a href= "https://megaphone.fm/adchoices">megaphone.fm/adchoices</a></p>