The horror sequel is tackling the second half of Stephen King’s classic novel.
Set 27 years after the events of the first film, Pennywise the Dancing Clown returns to terrorise Derry, Maine once again.
But of course the Losers’ Club we met in the 1980s are all grown up and now the full cast have been confirmed.
First to be announced for It Chapter 2 was Chastain as Beverly Mash, the only female of the group.
Next up were James McAvoy and Bill Hader cast as Bill Denbrough and Richie Tozer.
These three film star leads were followed by a group of TV actors to make up the supporting cast.
This included another couple announced at once in the form of James Ransone as Eddie Kaspbrak and Andy Bean as Stanley Uris.
As for Ben Hanscom, a character who goes from chubby kid to handsome hunk, it was Jay Ryan who bagged that role.
And last but not least is Isaiah Mustafa as Mike Hanlon, who was announced over the weekend.
Speaking with Den of Geek, Skarsgard said: “We’re gearing up for it now, so I’m sort of in the process of getting back into that character of Pennywise. I’m sort of in the mindset and we’re gearing up for it.
“I think they [the Losers Club cast] start in July. I’m not sure exactly when my start date is, but some time this summer.”
Skarsgard is also excited by the adult Losers Club cast.
He added: “I’m really looking forward to it. It’s going to be a very different experience this time around, just given the fact that you have all of these incredible, seasoned actors to play against, as opposed to having all the kids.
“So it’s going to be a different experience for sure. But I’m looking forward to it.”
It: Chapter Two will be released in UK cinemas on September 6, 2019.