In the 60s Beatlemania caused chaos in Liverpool, but yesterday the appearance of a certain boy band caused utter pandemonium in the city...
The boys even put up a picture on Twitter to show just how many people were waiting outside - wow!
'i love this radio tour..its a great chance for us to see you guys outside the radio stations ..im excited about the coming week!!' Tweets Niall Horan, 17.
The lovely lads made sure that they didn't disappoint their fans and even braved the deafening screams to give everyone the chance to take photos. Aaaaw!
Can you spot Louis Tomlinson and Niall Horan hiding in the crowd? (We cheated and added them in just for fun!)