All-Reviews.com: Mean Girls: Reviews of the film.
Chicago Sun-Times: Mean Girls: Roger Ebert's review of the film.
HARO Online: Mean Girls: Review of the film.
IMDb: Mean Girls (2004): Cast and crew list, filming locations, discussion forum, and production notes.
Mean Girls: Official site. Trailer, buddy icons, desktop wallpapers, WinAmp skin, news, video clips, games and synopsis.
Mean Girls - TEN Movies: Review of the film, credits, photographs and links.
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Mooviees: Mean Girls: Images, wallpapers, trailers, reviews, cast list, synopsis and financial figures.
MSN Entertainment Movies: Mean Girls: Cast list, synopsis, trailer, showtimes and user reviews.
TeenHollywood.com: Mean Girls: Interview with the actresses who played "The Plastics" in the film.
TheCelebrityCafe.com: Mean Girls: Review of the film.
Wikipedia: Mean Girls: Features include plot, analysis, trivia and related links.
Yahoo! Movies: Mean Girls: Preview, trailer, video clips, images, discussion forum, synopsis and cast list.