In the hilarious clip, Lohan, Rachel McAdams, Lacey Chabert and Amanda Seyfried recreate the four-way phone call scene from the 2004 movie. The Instagram post features the actresses reading their lines from the comfort of their homes, which was then spliced together with footage of the original scene.
The ill-fated call begins when Lohan's new-girl character tries to pull one over on Regina George (McAdams) by discussing the Queen Bee's anger toward Gretchen (Chabert) while Gretchen is secretly on the line.
After hearing the nasty things Regina has to say about her -- "She's such a s**t!" -- Gretchen dials in Karen (Seyfried) to gossip. Karen then gets a call from Regina, who once again expresses her dislike for Gretchen.
The girls go back and forth from there, breaking promises to keep secrets, lying about who said what, and fully letting the flick live up to its name.