Irish heartthrob Niall Horan has revealed that when he stops to think about the success One Direction have enjoyed so far in their collective career, he gets overcome with emotion.

The band are currently touring mainland Europe and Horan took to his official Twitter page earlier today (May 1) to thank his fans for making his amazing life possible:

"Just having one of those moments again..so thankful to you guys for gettin us here.we are touring the world this year .its just all so crazy."

One Direction left France yesterday and footage emerged of member Harry Styles getting mobbed outside of his hotel in Paris, which shows just how well-known the lads really are all over the world.

They will perform in Antwerp, Belgium this evening and Horan shared a snapshot via his Instagram page of the city, adding: "Hello Brussels baby! We finally made it to Belgium! #TMHTinBrussels hell yeaahhh!"

Watch footage of the group from one of their recent concerts here: