Vocal group 4Men has made a hilarious transformation into Christmas angels. Member Kim Won Joo tweeted, "Merry Christmas!! [This is] 4Men, who has transformed into angels. Let's meet at Daegu tomorrow." The photos seem to have been taken backstage at the 'Crazy Soul' concert, which hosted 4Men,�Vibe, and Lee Young Hyun. Netizens chuckled as they left comments complimented the members on their adorable innocence and unexpected aegyo. In related news, Kim Won Joo will be releasing a solo album on December 29th. Source + Photo: Osen