Watch: Terrifying IT Chapter 2 trailer released

The first full trailer has been released for It Chapter Two, the sequel to the most successful horror movie of all time.

It Chapter Two is the follow up to 2017's It, also based on the Stephen King novel of the same name.

The sequel picks up with the 'Losers Club' - a ragtag group of friends living in Derry, US - all grown-up after the events of the first movie.

They'll be reuniting to try and take down Pennywise the evil clown once and for all, 27 years later, but it looks like not all of them have survived.

The super scary trailer hints at the origin story of Pennywise - a mystery the Losers Club will probably have to solve if they want to defeat him and live to tell the story.

It Chapter Two will be released in September.