Frozen was the highest grossing animated movie of all time. It was also the fifth highest grossing movie of all time and the highest grossing movie of 2013.
It's based on "The Snow Queen", by Hans Christian Andersen and is, at its core, a tale of sisterly love. That may be part of the reason why it is so incredibly popular with young girls.
As a result of the enormous popularity of the movie, demand for Frozen merchandise - toys, games, costumes, etc. - greatly outstripped supply. For several months after the movie release, frustrated parents searched in vain for Frozen related items for their own little princesses.
Fortunately Disney's marketing team has addressed the issue now and Frozen toys for girls are much easier to find.
Here are a few examples of what's on the market right now:
http://fromzeronow.com/frozen-toys-for-girls/
https://flipboard.com/section/disney-frozen-toys-for-girls-bgZtSv
