'See You Again' - most viewed YouTube clip of 2015

Wiz Khalifa and Charlie Puth's video for 'See You Again' is the most viewed YouTube clip of the year.

The song - from Fast and Furious 7 - has now been watched more than a billion times worldwide.

Music videos dominate the list - with Adele, Ellie Goulding and Taylor Swift all in the Top 10.