To say that Frozen has been successful would be an understatement. Along with heaps of critical praise, it pulled in over $1.2 billion worldwide, making it the highest-grossing animated movie of all time. With a performance like that, the urge to release Frozen 2 as soon as possible would have understandably been irresistible, but Disney opted not to go down that path. In fact, there was reportedly a lot of debate among the study bigwigs whether they should make Frozen 2, and the sequel wasn't officially announced until March 2015. So even though we don't know yet when Frozen 2 will kick off production, at least Frozen fans can take comfort knowing they're working hard to draft a worthy follow-up, and that Kristen Bell and the other actors are ready to go whenever things kick off.