It has been ten years since Lindsay Lohan starred in the teen comedy 'Mean Girls', and its cast members are celebrating its anniversary. 

Lindsay Lohan
Lohan was the leading lady in 'Mean Girls'

On Wednesday (April 30th), the 27 year-old actress and her co-star, Amanda Seyfried, rushed to social media to share their views on the famed flick's birthday.

Lohan, who starred as the naive student Cady, took to Instragram to kick-off the celebrations by posting a sketch of a famous scene where the character Damien attends the high school's girl's only meeting, and shouts memorable line, "She doesn't even go here!"

The OWN reality star captioned the pic, "He has a point #happybirthday #10years #MeanGirls."

This tribute to 'Mean Girls,' which Tina Fey wrote, came shortly after Seyfried took to Twitter to give a shout out to the movie.

Amanda Seyfried
Seyfried played one of the 'plastics', Karen Smith

"On Wednesdays we wear pink," she tweeted, along with a photo of her character Karen Smith.

The 28 year-old actress is also using this opportunity to promote a campaign of kindness, while slightly changing one of the film's classic lines, "you can't sit with us," Seyfriend posted a photo to her Instagram which read, "You can sit with us."

"In honor of the 10 year anniversary of Mean Girls, I alongside @kindcampaign say to you, 'You CAN sit with us,'" the photos caption read. "Repost this picture with the hashtag #youcansitwithus in an effort to bring an end to girl-against-girl bullying. #youcansitwithus #eventhoughyourenotwearingpink."

MORE: Neil Flynn Says Mean Girls Helped Launch 'Biggest' Women In Comedy 

Lohan also addressed the 10th anniversary of 'Mean Girls,' which grossed $121 million at the worldwide box office, in a post on her website.

MORE: 'Mean Girls' 10 Years On: Memes, Memories, And The Cult Of Mean 

"As far back as I can remember, I always wanted to be a mean girl.Xo L," she wrote. "Flashback to 2004. Can't believe it's been ten years #teamcady."

Mean Girls
'Mean Girls' was released ten years ago