“It’s October 3rd.

#meangirls #itsoctober3rd,” Lohan captioned the post.

Bennett (who commented, “What day is it?”

Mean Girls Lindsay Lohan

Lindsay Lohan’s ‘Mean Girls’ Instagram.Lindsay Lohan/Instagram

“On October 3rd, he asked me what day it was,” Bennett says to the camera.

“What day is it?”

Amanda Seyfried, anotherMean Girlsstar, noted the day on herInstagram, too.

Mean Girls Jonathan Bennett

Jonathan Bennett and Robert Buckley.Jonathan Bennett/Instagram

Costar Daniel Franzese offered his thanks to the film’s fans as he marked Oct. 3.

Comedies can especially be.

They kept me going during all my darkest moments.

Mean Girls Amanda Seyfried

Amanda Seyfried’s Instagram on Oct. 3.Amanda Seyfried/Instagram

My favorite movies hold the sounds of my best friends and my families laughter.

Those laughs live in those movies.

So it’s not lost on me you’re basically fangirling over a fan girl.

Your fan art blows my mind tho.

Every year more and more I get swept away in all your talents.

You make me smile and feel important.

You make me work so hard to put on a amazing show for you all.

I truly love you all."