They're two of the biggest pop acts on the planet; and even class each other as friends, but One Direction and Justin Bieber are set to go head to head at the 2012 MTV Video Music Awards.
The lads have picked up nominations in the Best New Artist category and Best Pop Video but they will have to fight off Justin Bieber for that one!
Just to make sure they take home the award on the night, the 'What Makes You Beautiful' singers have been tweeting their 6.2 million fans to vote for them.
Member Liam Payne, said: ''Morninnngggg , remember keeeepp vottinnnggg http://m.mtv.com/vma/categories/index.rbml?cid=300 … and ill be on later to follow you allll :''
Justin Biber gearing up for a battle with One Direction (Wenn)
But Justin Bieber isn't going down without a fight as he took to Twitter this morning (August 31) to make sure he takes home that gong next week.
''#TEAMBIEBER let's do it... #VOTEBIEBER'', Justin said.
So as time ticks down to this year's MTV VMA Awards, Entertainmentwise wants to know are you team Bieber or team Justin??
Do you play 'Boyfriend' on repeat or do you croon over Harry Styles in One Direction's 'What Makes You Beautiful' video? VOTE NOW!