Psy will be featuring the whole cast of Infinity Challenge and Brown Eyed Girls' sexy Ga In in his new MV! The cast is shooting for his "Gentleman" music video. Ga In takes the place of HyunA and Infinity Challenge members Park Myung Soo, Jung Jun Ha, Jung Hyung Don and Gil, who jumped on board in addition to Yoo Jae Suk, Noh Hong Chul and Haha. Check out the leaked photos of behind the scenes to get a glimpse of Psy's upcoming music video: As for the dance moves for his new MV, he commented that Koreans know the dance but people outside Korea have not seen it. What are you expectations for Psy's new music video? (Source: