Psy's "Gangnam Style" outfit was the most popular costume this Halloween.

Recently, on an online community board, a post with the title, 'Halloween Costumes' and a few pictures were revealed.

In the photos, many people were dressed up as Psy from men, women and babies. This proved Psy's global popularity.

Internet users commented, "I am so proud of Psy" and "Everyone seems to be addicted to Psy."

Psy has become a global sensation with his hit song, "Gangnam Style."

He has over 600 million hits on YouTube and is ranked number 2 on the U.S. Billboard Main Single Chart 'HOT 100'. 

He has appeared on many shows such as the "Ellen Show" and "SNL." He has also appeared on CNN, ABC and the MTV VMA's.

He was also recently on "The X Factor Australia" and "Today Tonight."

He is currently working on his english debut album that will release sometime in November.