Luca Guadagnino’s much-anticipated HBO series has yet to debut on British screens but fans have been quick to spot some guest appearances by none other than Timothée Chalamet and Armie Hammer.

The Call Me By Your Name stars appear as background extras in We Are Who We Are, about a group of teens living on a US military base in Italy.

The New York Times’ Kyle Buchanan was the first to confirm the news after viewers noticed a background extra in episode three who looks identical to Chalamet. A source close to the show later confirmed that Chalamet appears walking in and out of the frame behind Kid Cudi’s Scott Mescudi in a very brief cameo. Hammer’s appearance will reportedly be the same in an upcoming episode.

In an interview with Esquire, Cudi said he called Chalamet after being cast by Guadagnino in the HBO series because he was convinced Chalamet had something to do with the hiring.

“I can’t believe I got the role. I asked Timmy if he said something to (Luca) or anything to plug me. I thought that was all Timmy when (Luca) hit me up, truthfully. (Timmy) was like, ‘No, bro, I was playing your music on set and telling him who you were… No.’ So I was like, ‘Oh, this is fucking ill. Just the universe lining up just right.’”

Guadagnino said of Cudi, “He’s a great actor. But for me to be on set is to be with people that I worship, that I love, that I want to spend time with, and I felt that energy with him.”

Watch the sneaky moment below.