QUIZ: Can te Guess Which 1D Single Sold più Copies? 

Can we talk about Harry Styles\' vivid floral...

Has 5SOS\'s Ashton Irwin discovered the elixir of...

So this is what 100 layers of fake tan looks like

Cheryl and Liam Payne \'arguing over him refusing...

Harry Styles talks about One Direction \'very...

Niall Horan went to watch James Corden sing with...

You might run several One Direction fan accounts and know exactly what shade of blue brings out Louis Tomlinson\'s eyes the most, but do you know the cold, hard facts about their sales reach?

Well, we\'ve devised a test that\'ll tell you which of One Direction\'s singles are commercially the most successful in the UK. So, reckon you can guess which tracks won the heart of the public? Well take our quiz below and let us know how you score with a tweet @sugarscape. 

This is how much Kanye West\'s Pablo T-shirts actually cost to make

Ariana Grande and Mac Miller are officially dating and have been kissing and everything

Louis Tomlinson\'s back in the UK, people (and he\'s looking fit)

Ben Winston fangirls over how wonderful Harry Styles is

Can we talk about Harry Styles\' vivid floral shirt, please?

Niall Horan\'s in Las Vegas having a wild time

​Because what\'s a party without the Nialler essentially By

50 Cent says One Direction should \'reform as quickly as they can\'

One Direction\'s \'What Makes You Beautiful\' Video Nearly Got Shut Down By Police

Where is the girl from One Direction\'s \'What Makes You Beautiful\' video now?

Is she still lighting up the world like nobody else?​

You can actually buy a jar full of Niall Horan\'s dreams and it\'s all for charity

What\'s Dunkirk\'s Cillian Murphy got to say about Harry Styles now?