Although Halloween has drifted past us already, we had to share these last costumed photos with you! JYP (Park Jin Young) attended a Halloween party dressed up as well... some sort of modern-day Robin Hood? A masked mafioso? We're not exactly sure, but you know that he knows he's looking fly. Actor and ex-Roo'ra member�Go Young Wook posted additional photos of other celebrities who attended the party that night. Check them out below! [gallery columns=2] Source: Sports Chosun Photos: Go Young Wook's Twitter