A photo posted by Reese Witherspoon (@reesewitherspoon) on
And the trio weren't content with just watching! Blair, Witherspoon and Gellar were both seen getting super into the show, and singing along to the musical.
Geller also posted a #TBT pic of her and Cruel Intentions writer/director Roger Kumble, wishing the filmmaker a happy birthday.
Blair also wished Kumble a happy birthday with a throwback pic, captioning: "#tbt To the day of #secretsociety dance on set of #cruelintentions. And a very happy birthday to the man who made that movie, one of my favorite people."
The only other main player from the '90s hit that didn't make it out was "Secrets and Lies" star Ryan Phillippe. However, he did make it out to a staging of Cruel Intentions the Musical back in April, where he even showed off a sweet souvenir on Instagram.
This was also the second time watching the musical for Gellar, who attended a different show in April alongside her Cruel Intentions co-star Sean Patrick Thomas. Gellar posted a video the next day with some of highlights from the production.