Derry Girls finally came to an end on Wednesday night with a special extended episode that turned out to be an emotional rollercoaster for fans. But it was the last few moments of the instalment that left viewers stunned as a major celebrity made a cameo.
The last scene, which was set in present-day New York, saw a postman deliver a letter to none other than Chelsea Clinton!
WATCH: James confesses his feelings for Erin
Back in series two, the Derry gang penned a letter to Chelsea following Bill Clinton's momentous visit to the city and the final moments of the episode saw the former President's daughter finally receive the letter and read out the contents as the credits rolled.
Fans were in shock over the incredible cameo, with one person tweeting: "Chelsea Clinton my mind's blown," while another added: "Bawling at the final #DerryGirls. And the GASP I let out when Chelsea Clinton turned up. Just perfection."
A third viewer commented: "#DerryGirls and just like that it's gone!!! What an epic last episode...and the shock appearance at the end," while another added: "The power Derry Girls has to get a literal Chelsea Clinton cameo to close out the series…this show is truly unmatched."
Chelsea Clinton made an appearance on the show
Speaking about the series and her special guest appearance, Chelsea said: "Thanks to Lisa McGee’s incredible talent, and that of the wonderful cast and crew of Derry Girls, people around the world have been able to better understand and relate to a hugely significant and important period of history in Northern Ireland and for the world.
"Like many, I am a big fan of the series, and I was honoured to be able to appear in the very special final episode. I hope people enjoy watching it as much as I enjoyed being a part of it!"
Fans were left emotional following the final episode
The show's creator and writer Lisa McGee revealed her motivation for bringing Chelsea into the show at a recent press event.
"I wrote [Chelsea's cameo] to sort of amuse myself," she told HELLO! and other journalists. "Because I was like 'Oh, this is never going to happen' so I just wrote it as a little in-joke and then the more we talked about it, me and Mike [Lenonox, director] I was just like, 'Sack it, let’s just try'.
"I got a contact for her. I was trying everywhere, it was embarrassing, I even contacted some politician in America who was not a Clinton fan and I thought because they were all Democrats, it would be all lovely and they get on. I then tried people in Queen’s University and eventually it was a manager in America who used to work for the Clintons. She acted like this middlewoman for us and she rang me one night and was like 'Chelsea’s in!' and I was like ‘Oh my God!'
"We were so obsessed with her because we were the same age, we talked about Chelsea coming to Derry. It was amazing to us that this teenage girl was in the middle of all this glamorous stuff, living in the White House."
Like this story? Sign up to our What to Watch newsletter to get other stories like this delivered straight to your inbox.