The Americans can't wait! One Direction album release bought a week forward in the U.S. after successful stateside tour

The were been mobbed by teenage girls throughout their U.S. tour.

So it's not surprising that One Direction's debut album has been forward a week in America.

Stateside fans will be able to purchase Up All Night on March 13.

Say cheese: The fan pulled herself away long enough t pose for pictures

Say cheese: One Direction (four members pictured this week) have had their debut album pushed forward a week in the U.S.

Their number one single What Makes You Beautiful, will be released in the U.S. one February 14.

The video for the hit song has already garnered over 47 Million views on VEVO and will have its U.S. broadcast premiere on Nickelodeon next Saturday during the network's primetime Valentine's-themed night.

The boys were swarmed by fans during
their visit to Los Angeles where they filmed an episode of popular
series iCarly with the show's star, Miranda Cosgrove.

The crowds of screaming girls were so big, the band was ushered through LAX yesterday, out of view from their followers.

Liam tweeted: 'Sorry to anyone who was at the airport security wouldn't let us out that way so frustrating!!'

Ready for the big push stateside: One Direction with Nickelodeon's iCarly star Miranda Cosgrove

Big things ahead: The band pictured with Nickelodeon star Miranda Cosgrove, from left Niall Noran, Louis Tomlinson, Zayn Malik, Harry Styles and Liam Payne

The boys are back in London to prepare to promote their upcoming single One Thing, which is released on February 13.

But while the group are known as an equal five-piece on home soil, it emerged over the week that their US management are keen to put forward cheeky Harry as the 'frontman,' citing that boybands in America that have a recognised frontman tend to make it bigger than those that don't.

Harry led the band when they filmed iCarly, with the main character developing a crush on him.

A source told The Daily Star: 'Columbia music execs are rubbing their hands with glee. It looks like One Direction are going to be absolutely massive in America.

'They decided long ago that Harry is a natural frontman. He’s funny, confident and has a great voice.'

But the group are keen to stick together. A friend told the newspaper: 'They are determined to carry on the way they have been – without a lead singer. Harry certainly hasn’t asked for all this attention.'

The band will be back in the States next month to support boyband Big Time Rush.