The 53rd animated feature from Disney, Frozen tells the story of Anna, a fearless princess who sets off on an adventure with a rugged iceman, his trusty reindeer, and a naïve snowman to find her estranged sister, Elsa, whose uncontrollable cryokinetic powers have trapped the kingdom in an eternal winter. The movie was a massive commercial success, earning nearly $1.3 billion worldwide, and is currently ranked as the highest grossing animated film of all time.

Here are a few facts you might not have known about this fantastic fairy tale.

Frozen Facts

36. No snowman for you!

Just months before “Frozen” was scheduled to hit theaters, “Do You Want to Build a Snowman” wasn’t even in the movie. It had been removed, but its popularity among Disney employees convinced the filmmakers to add it back in.

35. Lucky young ladies

The two actresses who voiced the younger versions of Anna during “Do You Want to Build A Snowman” were Katie Lopez and Agatha Lee Monn. Katie, who sang for the youngest Anna, is the daughter of songwriters Kristen Anderson-Lopez and Robert Lopez. Agatha Lee Monn, who played teenage Anna, is the daughter of director Jennifer Lee.

34. Frigid

The film is based on “The Snow Queen,” a fairy tale written by the prolific Hans Christian Andersen who also wrote The Little Mermaid, and Thumbelina, and without whom Disney would have to… gasp… come up with something original.

33. The Buck Stops Here

Disney first tried to adapt “The Snow Queen” in the early 1930s but could never get the story right. They revisited it again in the late 1990s and again in the early 2000s. In 2008, they tried again, hiring director Chris Buck who had previously directed Tarzan.

32. Breaking through the Ice Ceiling

Frozen was the first Disney feature to be directed and written by a woman (Jennifer Lee, who wrote the film and shares a co-director credit with Buck).

31. Heavy is the Crown

Elsa is the second animated Disney princess to become a Queen during a film (the first was Princes Kida from Atlantis: The Lost Empire) and the first to receive her coronation on-screen.

30. Just like Voltron

The characters Hans, Kristoff, Anna, and Sven are actually another reference to Andersen (just say the four names quickly to see how).

29. More Moore!

Both Idina Menzel and Kristen Bell auditioned for the part of Rapunzel in Tangled. In the end, Mandy Moore wound up getting the role instead.

28. Don’t Feed Them!

Trolls are one of the well-known trademarks of Scandinavian culture. Also, the Internet.

27. Name Brand

Since the movie came out, the names Anna and Elsa have become increasingly popular for baby girls.

26. Rule 34

There’s a large fan fiction community that imagines a romance between Elsa and Rise of the Guardians’ Jack Frost. Because it’s the Internet, no doubt this romance is not suitable for children.

25. Big Brother

In early designs, the Snow Monster that Elsa creates was a giant version of Olaf, who addresses him as “little brother.” Although it was cute and kind of funny, the filmmakers decided that, ultimately, it looked a bit dumb and scrapped it. Incidentally, this would be a terrible philosophy for a parent.

24. Tastemakers

There is a note in the end credits that says Disney doesn’t necessarily agree with Kristoff’s views that all men eat their own boogers. Wrong again, Disney. Wrong again.

23. Fjǫlkunnigr

The filmmakers hired Jackson Crawford, a professor of Old Norse and Scandinavian mythology at UCLA, in order to infuse the script with Norwegian accents, phrases, and probably a ton of ancient curse words.

22. Lemon Party

Hans’ horse is named Sitron, which is Norwegian for “lemon.” Pro-tip: Don’t drink the lemonade.

21. It Don’t Mean a Thing If You Ain’t Got That Swing

The painting in the palace gallery that Anna poses in front of is a representation of Jean-Honoré Fragonard’s “The Swing.” The original painting, by the way, is about a guy looking up a woman’s skirt. Real family-friendly stuff.

20. Valley of the Dolls

Limited edition Elsa and Anna dolls have been selling for $10,000 on eBay, bought by parents who desperately want to make their kids happy and not-creepy-at-all collectors who *really* like dolls.

19. Open Door Policy

When Anna sings “Love is an Open Door” with Prince Hans, it is the first time a Disney princess has ever sung a duet with a villain. Of course, she didn’t know he was a villain at the time. Still, no excuses.

18. Barking Up the Wrong Tree

After Arendelle is covered in snow, two townsmen can be seen arguing over the correct way to stack firewood. This refers to a heated (hehe) debate in Norway after a 12-hour TV program on firewood aired. It included 8 hours of a live fireplace, and the network received dozens of texts complaining about how the firewood was stacked with a near 50/50 split about whether or not bark up or bark down was correct. Look at the things America could be arguing about instead of healthcare.

17. Sisterly Love

Although reading voiceovers together is rare in animated films, producers had Idina Menzel and Kristen Bell read their scenes together to add to the chemistry. It seemed to work.

16. Reindeer are Better than People

Tourism in Norway drastically increased after the film’s release, specifically to the Lofoten Islands, which served as the backdrop for the film with its dramatic snow-capped peaks and beautiful fjords. However, the tourism has begun to overwhelm the local infrastructure with residents of the island referring to the small woodlands near a popular mountain climb as “the forest of poop” due the mess that the tourists have left behind. A forest full of poop, by the way, would be an awful setting for a Disney movie.

15. Follicle Follies

Animators developed a program called Tonic with the specific purpose of animating Elsa’s hair. The average blond human has 150,000 strands of hair on their heads. By contrast, Elsa’s hair had 400,000 individual strands.

14. Celebrity Couple

Rapunzel and Flynn from Tangled make a brief appearance at Elsa’s coronation and even Rapunzel, famous for her hair, has less hair than Elsa.

13. Flaky

Animators also created a snowflake generator program to build 2,000 different snowflake shapes that they could use for the film. Rumor has it that they then had to create another program to create a safe space for each of those special snowflakes.

12. Do You Want to Build a Snowman?

To create Olaf, Disney created software called Spaces and Flourish, which allowed artists to deconstruct the character and to add extra movement (i.e. the twigs on Olaf’s head).

11. Lappdance

The character of Kristoff was influenced by the Sami people (also known as Lapps), who are indigenous to northern Norway.

10. Reindeer Games

To animate the character of Sven, the animators brought an actual reindeer into the studio. This follows a long tradition of bringing animals into the studio to create models. The lion that was brought in for The Lion King nearly bit Jeffrey Katzenberg’s head off. Hard to be a studio head without a, y’know, head.

9. Framed

The sequence when Elsa walks out onto the balcony of her newly created ice palace is 218 frames long, and one of the frames was so complicated it took 132 hours to complete.

8. Ice Cubed

Ice cutting, as depicted in the sequence at the beginning of the film, was once an actual profession. But, since then, we’ve figured out better ways to make ice cubes.

7. The Doctor is In

The filmmakers brought in Dr. Kenneth Libbrecht, who is sometimes known as “Dr. Snow,” to serve as a consultant on how snowflakes form. We guess Dr. Freeze was busy.

6. Involuntary Sex Ed

A theatre in Florida accidentally played a two-minute porn clip during the screening of the film.

5. Snow Bird

Megan Mullally from Will and Grace was originally cast as Elsa who, at the time, was designed more as a Bette Midler type character.

4. They Tried to Make Her Go to Rehab and She Said, “Snow, Snow, Snow.”

There was a version of Elsa that was based on Amy Winehouse, but because of her lifestyle, Disney ultimately decided that this Amy-inspired Elsa may not be the best role model for children. Weird.

3. Bad Girl Gone Good

Elsa was originally supposed to be a villain with light blue skin, short spiky blue hair, and a cruel taste for animal abuse: she had coat made out of living weasels. It wasn’t until later on that they decided to make Elsa’s character misunderstood instead of just pure evil that they really found the magic of the film. We wish they had kept the weasel coat though.

2. Let “Let It Go” Go

“Let it Go” was written in a single day. One day is all it took to ruin parenthood in America.

1. The Power of Song

In fact, it was the song “Let it Go” that inspired the shift in Elsa’s character, as the song didn’t describe a villain, but a “scared girl struggling to control and come to terms with her gift.” This resulted in a complete rewrite of the first act, which rippled through the rest of the story and created the movie we all know and love.

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