UK boyband One Direction have finally unveiled their highly anticipated music video for 'Best Song Ever'.

The clip sees the heartthrobs dressed in a variety of unusual and dramatic costumes with some of the lads having some complete makeovers (pictured below). They released the exciting clip earlier this evening (July 22) and accompanied the link with the caption:

"THE TIME HAS COME! We can now present the #BestSongEverOfficialVideo! Let the biggest watch party ever begin!!"

Irish singer Niall Horan took to his official Twitter page tonight and told his followers that he is so excited they can finally watch it: "I hope u like the video! Alot of hard work went into it! well done @benwinston. smashed it mate!"