IT: Chapter Two New Trailer Drops And It's Terrifying

"Chills from head to toe!! Looks Incredible!" one fan tweeted after the trailer dropped.

Another said: "I cannot wait to see it! Looks like it could be one of the best horror movies of the year."

In the new trailer - which will be our final sneak peak before the movie drops later this year - we see more of the full grown-up cast in action together, with James McAvoy, Jessica Chastain, Jay Ryan, Bill Hader, Isaiah Mustafa, James Ransone and Andy Bean all seen panting, running and screaming through the clownish nightmare.

We hear more about their plans on what to do 'if it ever comes back', while flashing back to their experiences with Pennywise as kids - which *spoiler alert* weren't particularly good.

But sadly for them, Pennywise does indeed return, saying ominously: "For 27 years, I've dreamt of you. I craved you. I've missed you!"

The film sees Andy Muschietti return to the director's sear, while actor Bill Skarsgård reprises his role as the terrifying clown.

Bill Hader will play Richie Tozier, Jay Ranscom will play Ben Hansom, and James Ransone will take on the role of Eddie Kaspbrak.

Meanwhile, X-Men star James McAvoy will play an adult Bill Denborough.

The film is based on the iconic novel by the master of horror, Stephen King, who, in anticipation of the film, revealed earlier this week that he had already seen it and fans were in for a treat.

After watching the new trailer, the iconic author tweeted: "It's really cool."

But if you're still not convinced that it will be as scary as the first, have a read of what McAvoy had to say about it.

Speaking at Comic-Con, he admitted: "I had nightmares about Pennywise quite a lot. The only one I can really remember is I'm lying on my side in the bed and he was in bed with me.

"And he's stroking my back gently and saying, 'Wake up James, wake up.' And I was just terrified, pretending to be asleep.

"I just thought, 'I've got to pretend to be asleep, I've got to pretend to be asleep.'

"I had lots of nightmares about Pennywise but that's the one specific one I can remember."

Co-star Chastain also revealed that they used 4,500 gallons of fake blood during filming.

To put that into perspective, HBO used just 4,000 gallons during the whole of season eight of Game of Thrones.

Speaking during the promotional event she said: "I'm a glutton for punishment. Everyone else was comfortable between takes, while I sat in a baby pool of blood."

Referencing another of King's classics, the actor added: "Let's make Carrie on steroids."

He said: "There's a lot to explore. You can change him [Pennywise] or make him wackier, but he's not really bound to continuity in the sense that a normal character would be.

"We can explore his unpredictability now that we've established the character for the audience.

"We can still sort of shock them."

IT Chapter 2 will be released on 6 September.