Annual observance

Mean Girls Day

October 3 Cultural / community observance Updated 2026-07-08

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Overview

Mean Girls Day is an unofficial holiday celebrated annually on October 3rd by fans of the 2004 cult classic film "Mean Girls." The date gains its significance from an iconic scene where Cady Heron, played by Lindsay Lohan, recounts her crush Aaron Samuels asking her, "What day is it?" to which she replies, "It's October 3rd." The day is typically observed by watching the movie, quoting memorable lines, and sometimes wearing pink, a nod to the film's famous "On Wednesdays we wear pink" rule.

Why it matters: Mean Girls Day, celebrated on October 3, honors the cultural impact of the 2004 film "Mean Girls," which explores themes of friendship, identity, and social dynamics in high school. This day serves as a lighthearted reminder of the film's enduring relevance and its ability to spark conversations about the complexities of adolescence.

Origin and story

The film was written by Tina Fey, who also stars as Ms. Norbury, and is loosely based on Rosalind Wiseman's non-fiction self-help book "Queen Bees and Wannabes."

Lindsay Lohan originally auditioned for the role of Regina George, while Rachel McAdams, who played Regina, initially tried out for Cady Heron.

Quick facts

  • DateOctober 3
  • TypeCultural / community observance
  • Great forFriends, Families, Classrooms, Teams

Also on this date

Ways to celebrate

One throwaway line in a 2004 teen comedy — "It's October 3rd" — turned an ordinary date into an annual pop-culture holiday, decades after the film's actual April release date faded from memory.

Do it right

Celebrate by:

  • Watching the movie today and quoting the lines you still remember.
  • Wearing pink, a nod to the film's "On Wednesdays we wear pink" rule, if October 3 happens to land on one.

See how the day actually caught on

Helpful resources:

Did you know?

Tina Fey wrote the screenplay based on Rosalind Wiseman's nonfiction book about teenage cliques, and she's said she deliberately used specific, real-feeling details like "October 3rd" because they read as more authentic than something vaguer.

Fun facts

  • The film was written by Tina Fey, who also stars as Ms. Norbury, and is loosely based on Rosalind Wiseman's non-fiction self-help book "Queen Bees and Wannabes."
  • Lindsay Lohan originally auditioned for the role of Regina George, while Rachel McAdams, who played Regina, initially tried out for Cady Heron.
  • The phrase "So fetch" was intended to be a new slang term for the Plastics, but Regina George famously tells Gretchen Wieners, "Gretchen, stop trying to make 'fetch' happen! It's not going to happen!"

Sources and attribution

What Is Mean Girls Day? How to Celebrate October 3rd (TODAY)

External links may lead to third-party websites.


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FAQ

When is Mean Girls Day?
It is observed on October 3 each year.
What is Mean Girls Day?
Mean Girls Day is an unofficial holiday celebrated annually on October 3rd by fans of the 2004 cult classic film "Mean Girls." The date gains its significance from an iconic scene where Cady Heron, played by Lindsay Lohan, recounts her crush Aaron Samuels asking her, "What day is it?" to which she replies, "It's October 3rd." The day is typically observed by watching the movie, quoting memorable lines, and sometimes wearing pink, a nod to the film's famous "On Wednesdays we wear pink" rule.
How do people celebrate Mean Girls Day?
Watch the movie and quote your favorite lines, or wear pink if the date happens to land on a Wednesday.

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