It's been almost two years in the making, but Psy's 'Gangnam Style' is on the edge of hitting 2 billion YouTube views.It was uploaded back on July 15, 2012, and hit the billion mark in December of that year. It currently has 1,997,416,090 views in 22 months, and is still the most viewed video on YouTube. The second biggest video? Justin Bieber's 'Baby,' which recently passed the billion mark.
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