Which upcoming comedy did Jennifer Lawrence just film a cameo for? The answer to that question is a big spoiler for some people, so you’ve been warned.

Jennifer Lawrence’s filming of this cameo was supposed to be a huge secret, so this is your final warning.

The Hollywood Reporter is reporting that the Academy Award winning actress was on the set of Dumb and Dumber To for one day only to film a cameo. In the highly-anticipated sequel, Lawrence will play a young version of Kathleen Turner’s character Fraida Feltcher. The character was not in Dumb & Dumber, released in 1994.

The sources that have informed THR also say that the entire The Hunger Games: Mockingjay cast has visited the set of Dumb and Dumber To, though don’t expect cameos from the rest of the cast. As both the film Lawrence is starring in and the one she’s cameoing in are filming in Atlanta, the Mockingjay cast is likely just there to hang out with their Hollywood friends.

It shouldn’t come as a big surprise that Lawrence would cameo in a film such as Dumb and Dumber To. Her most loyal fans will remember that one of her first big roles was starring on The Bill Engvall Show, so she’s no stranger to comedy.

In addition, Lawrence is an outspoken fan of the original Dumb & Dumber. In fact, she claims to know the entire script by heart (in addition to the Stepbrothers and Anchorman scripts). On Late Night with Jimmy Fallon she proved herself by quoting one of the scenes:

How do you feel about Jennifer Lawrence cameoing in ‘Dumb and Dumber To’?