One Direction's Niall Horan said he is "just pinching myself" ahead of today's This Is Us film premiere:
Holy crap! today is the day! We are actually doing a movie premiere ! Can't wait !
Just pinching myself! Absolutely huge day today! We want u to know that u made this all happen! And when u see the film or are standing on
Leicester square tonight! U can all turn to eachother and be like "we did this" so thank you so much
Directioners descended into London's Leicester Square in their thousands this evening, for the world premiere of One Direction: This is Us.
One Direction's first movie premieres today ... but what does it have in store for the boyband's fans?