Gangnam Style, the novelty dance song by Korean artist Psy, has become the most-watched YouTube video of all time as it continues to clock up views that now amount to over 324 million.

The previous holder of the most watched video on the online platform was Justin Bieber for the track Baby, which was posted in February 2010 and currently has over 805 million views.

Psy’s video, posted on July this year, overtook the teen star as they both reached ...