The drama has been a huge hit with viewers 

This is Us will be ending after season six, has revealed. The hugely popular family drama, which follows the trials and tribulations of three siblings and their parents, is expected to conclude in an 18-part series. 

MORE: This Is Us star Milo Ventimiglia talks famous fans of the show

It is expected that the news will be officially announced on Friday. The show's conclusion is not a cancellation, as the writers previously revealed that they knew when the story would come to an end. 

WATCH: Have you caught up with This is Us? 

Chatting to executive producer Isaac Aptaker explained: "In everything we do, we never put anything on TV until we know how it's going to end up, because you never want to paint yourself into a corner... It's a family. People have gotten married on the crew. People have had multiple babies. It's been half a decade. It's really become this really close-knit group. It's going to be wild to think of not doing it. But there's still so many more to do. Right now, it's like, 'Oh my gosh, we've got to get another episode on TV next week'."

We're not ready for the show to end!

Fellow producer Elizabeth Berger added: "We've been doing it for a long time, and many of us have been there from the very beginning, and have moved through the years together. We love the show, and it will be a big, emotional deal when it comes to the end."

MORE: Gilmore Girls cast and their real-life children

MORE: Reese Witherspoon and Oprah poke fun at magazine Photoshop fail

Fans were understandably disappointed by the shows, with one writing: "Nope. This show is too good to end with season six. It’s got to be like Greys Anatomy- keep going!" Another added: "I really don't know what we'd do without TIU but I have a feeling if they do a spin-off without the main characters such as Rebecca or Jack that it will flop."

A third person tweeted: "TIU is like reading a great novel. You have introduction of characters, learn their history and values, you have conflict and strife. Now you will know what happens to them. Yes, you don't want it to end, but the ride was so worth it." 

MORE: Addicted to true-crime documentaries? CBS Reality channel will be your new TV obsession

Sign up to HELLO Daily! for the best royal, celebrity and lifestyle coverage

ncG1vNJzZmivp6x7qbHLpaammZeWx6q6xGeaqKVfm7atuY5rZ2tpYGp%2BdX2QbGhsaV%2Bptaq%2FjKKqZq2jYsGwecSnm2aZlqmys3nSoq9mq5WWwLC60mg%3D