Happy Mean Girls Day. To celebrate, let’s take a walk down memory lane and look at the photos of the Mean Girls premiere and advanced screening. The 2004 fashion is on-point (and making a comeback). And the young Lindsay Lohan, Tina Fey, Amy Poehler, Rachel McAdams, and the rest of the cast make me so nostalgic. I’ll never forget seeing this movie in theaters and instantly loving it. However, I don’t think I or anyone else could have ever predicted just what it would become.

5 Most Quotable Mean Girls Moments

• Los Angeles Premiere Of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress Lindsay Lohan arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress Lacey Chabert (L) and director Mark Waters pose at the premiere of Paramount's "Mean Girls" at the Cinerama Dome, on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actor Tim Meadows arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress Amy Poehler arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome, on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress Lizzy Caplan arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome, on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere Of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress Rachel Boston arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
• Los Angeles Premiere Of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress Rachel McAdams arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress/screenwriter Tina Fey arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actor Jonathan Bennett arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
• Los Angeles Premiere of Paramount’s “Mean Girls” – After-party

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  LOS ANGELES - APRIL 19: Actress Tina Fey (L) and actress Lindsay Lohan (R) hug at the after-party for Paramount's "Mean Girls" at the Cinerama Dome Theater on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – After-party

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  LOS ANGELES - APRIL 19: Cast members Jonathan Bennett and Lindsay Lohan hug at the after-party for Paramount's "Mean Girls" at the Cinerama Dome Theater on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Private Screening Of “Mean Girls”

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  NEW YORK - APRIL 23: (U.S. TABS AND HOLLYWOOD REPORTER OUT) Actress Amanda Seyfried attends a private screening of "Mean Girls" on April 23, 2004 at Loews Lincoln Square Theater, in New York City. (Photo by Paul Hawthorne/Getty Images)
• Private Screening Of “Mean Girls”

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  NEW YORK - APRIL 23: (U.S. TABS AND HOLLYWOOD REPORTER OUT) Actress Lindsay Lohan attends a private screening of "Mean Girls" on April 23, 2004 at Loews Lincoln Square Theater, in New York City. (Photo by Paul Hawthorne/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress Lindsay Lohan arrives at the premiere of Paramount's "Mean Girls" at the Cinerama Dome, on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Actress/screenwriter Tina Fey (L) and producer Lorne Michaels pose at the premiere of Paramount's "Mean Girls" at the Cinerama Dome, on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
• Los Angeles Premiere of Paramount’s “Mean Girls” – Arrivals

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  LOS ANGELES - APRIL 19: Lacey Chabert at the premiere of Paramount's "Mean Girls" at the Cinerama Dome on April 19, 2004 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

• Private Screening Of “Mean Girls”

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  NEW YORK - APRIL 23: (U.S. TABS AND HOLLYWOOD REPORTER OUT) Comedian Ana Gasteyer attends a private screening of "Mean Girls" on April 23, 2004 at Loews Lincoln Square Theater, in New York City. (Photo by Paul Hawthorne/Getty Images)

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