There's a war going on between the One Direction boys... and it's all over who is most popular with the American girls!
While no one can deny that all of the guys have huge fanbases, it seems some members in particular have been attracting more attention stateside.
Here in the UK it may be Harry Styles that most seem to love and know of, if only to his relationship with Caroline Flack, but it's a different story in the USA.
One Direction have been in the country for the past 3 months promoting their debut album, which went to number one last month, and as they prepare for their US tour there are rows over who has the most female fans!
"All the boys are popular, but the girls in the us seem to be absolutely obsessed with Niall," one source tells Closer this week. "They love the fact he's Irish and looks like the perfect American boy. He gets swamped with girls wherever he goes.
"Zayn is a close second - he's very cheeky an confident, which is going down well."
The insider continues: "It's definitely been a bit of a knock to Harry's ego, as he's used to being the heart-throb back home.
"It's only natural that the boys are now competing for attention. It's causing a bit of tension.".
So, tell us, who is your favourite member of One Direction?!