Though we all know that Rainbow's Jaekyung starred as one of Jo In Sung's four female partners in his latest Cass CF, the identity of one of the other bikini girls has finally been revealed. The sexy girl in the black bikini is none other than top model Lee Hyun, who ironically has been mistaken for Jaekyung in the past. Since her debut in 2005, Lee Hyun has made a name for herself as a top Korean model. She has walked the runway for Chanel, Vivian Westwood, Hermes, and other global luxury brands. She is also known for having both beauty and intelligence with her degree in Economics from Ewha Womans University. Meanwhile, Lee Hyun is co-MCing OnStyle's 'Style Show Fi?' with Brown Eyed Girls' Narsha and she is showing her fashion sense as a mentor on OnStyle's 'Challenge! Supermodel Korea 2'. Source: BNT News via Nate