Girls' Generation held a massive flash mob with fans in Japan!

On June 19, they came together with 4,000 fans to promote their new song "Love & Girls". The flash mob featured the 'shampoo dance' and took place at Universal Studios Japan in Osaka. The flash mob was promoted online and it resulted in a massive turnout.

And it wasn't just the fans doing the dance - the dance was so addictive that even the guides and security guards participated. Sooyoung said, "We were worried  because this was our first flash mob. We felt good because we succeeded with the fans. We're so happy to see everyone happy as we danced together."

Check out Fuji TV's coverage of the flash mob above.