Gong Hyo Jin recently transformed into an idol star. The actress reportedly practiced for hours to pull off a dance performance for her role in MBC's "Best Love", as she is playing the role of an ex-member of the idol group 'National Treasure Girls'. At a press conference for the drama, she stated, "I worried a lot before choosing this drama because the role required me to sing and dance well." A representative for the actress' agency stated, "For her role in the drama, Gong Hyo Jin received special lessons from a professional dance trainer. She also practiced daily in midst of her busy schedule so the shooting went fairly well." Pictures were also uploaded on the official homepage of "Best Love", piquing the interest of many netizens. The actress is seen wearing a white sleeveless dress which emphasizes her innocent beauty. "Best Love" is a new Wed-Thurs drama about ex-star 'Goo Ae Jung', who romances Korea's beloved top star 'Dok Go Jin', played by Cha Seung Won. [gallery] Source: BNT News via Nate