In the drama, she portrays Choi Hye Jeong, one of the characters who bullied Moon Dong Eun (played by Song Hye Kyo). Despite being less wealthy than other characters, such as Park Yeon Jin (Lim Ji Yeon), Lee Sara (Kim Hieora), and Jeon Jae Joon (Park Sung Hoon), her character is just as vain as they are.
In the first season, Cha Joo Young wore figure-hugging outfits to accurately portray her character, who had a breast augmentation. The actress had previously mentioned that she lost about twelve pounds for the role.
As the scenes featuring the actress are going viral, a video interview she did with Allure in January is also resurfacing. In the interview, Cha Joo Young shared a story about the popular scene where she wore a white dress. She revealed that she had actually prepared a more loose-fitting outfit, but the director wanted her to wear the one that appeared in the show.