One Direction have become one of the biggest boy bands in the world, so it's hardly surprising that the lads have changed a little since first finding fame two years ago.
The 'What Makes You Beautiful' hitmakers first came to the public's attention in 2010 when they appeared on The X Factor as shy teenagers. Fast-forward two years, two number one albums, hit singles and success that is rivalling The Beatles, Liam, Zayn, Louis, Harry and Niall admit they have become different people.
Liam Payne told Press Party exactly what he thought of Louis Tomlinson, saying: "Louis was so quiet when I first met him, now you can’t shut him up." Harry Styles thought the opposite of Niall Horan revealing he was the loudest of the bunch.
Before the fame, tattoos and string of women (WENN.com)
"Niall was really loud. He just walked around with a guitar," he said. Niall explains it was probably because he was trying to win round his new bandmates as he was somewhat of a loner before.
"Really, because I had no friends and was trying to get myself friends, but wasn’t doing a very good job of it," Niall said in response to Harry.
Aww, poor Niall!
Fast-forward two years, haven't they grown into handsome young men! (AEDT/WENN.com)
Meanwhile, Louis says he is still shocked by the level of success the group has achieved in a short space of time.
"I don’t think you could ever envision anything like this," he said.
"We just feel so lucky to be involved in it. When you actually sit down and think about where we’ve come in two years, maybe nearly three years … it’s absolutely amazing. It sounds really obvious and everyone always says it, but we do have the best fans in the world," he said.
Do you think the 1D lads have changed much?