Niall Horan and Liam Payne were seen leaning out of the windows of their luxury Milan hotel this week, smartphones in hand, as they filmed footage of the mammoth crowds of excited fans waiting downstairs.
Check out that mob!
We think Irish heartthrob Niall summed it up quite well, tweeting: "Milan is nuts today! u guys don't mess around do u?"
One Direction - which also includes Zayn Malik, Louis Tomlinson and Harry Styles - were over in Italy to perform on the Italian version of X Factor and promote their new album Midnight Memories and single 'Story Of My Life'.
Their visit abroad comes as Amazon named them the bestselling X Factor act of all time, beating competition from the likes of Leona Lewis, Little Mix and Alexandra Burke.
One Direction took the title from Olly Murs following the release of their new album Midnight Memories. Olly had been the biggest seller up until November but he'll have to settle for second place - for now!
The top ten biggest selling X Factor acts of all time on Amazon are:
1. One Direction
2. Olly Murs
4. Leona Lewis
5. Rebecca Ferguson
6. Little Mix
7. Joe McElderry
9. Matt Cardle
10. Shayne Ward
Watch the music video for 'Story Of My Life' below: