

A 34-year-old woman named Lee So-young looks 10 years younger than her real age and manages to fool almost everyone around her. With a large family debt to take care of, only a high school degree, and big dreams of becoming a fashion designer, So-young has her work cut out for her. The only thing she has going for her in the cutthroat fashion world is her youthful appearance. In a fortunate accident, she gets mistaken for her younger sister, Lee So-Jin, for a modeling job and manages to land a position at her dream fashion company. There, she meets one of the managing directors, Choi Jin-wook, who looks far older than he really is. The two of them clash, especially since Jin-wook treats So-young with disrespect.
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Jang Na-ra
Lee So-young

Daniel Choi
Choi Jin-wook

Jin Ryu
Ji Seung-il

Min-seo Kim
Kang Yoon-seo

Kim Mi-Kyung
Director Baek

Yeon-Seo Oh
Lee So-jin

Yeong-hie Na
Hyeon Ji-sook (Managing Director)

Clara Lee
Chae Seul-ah

Yun Ju-sang
Jin-wook's father

Kim Hye-Ok
Jeong-ok (So-yeong's mother)
Hyeon-yeong
Ji Joo-hee

Hee-seok Yun
No Yong-joon
Tae-Woong Yoo
Team Leader Kim Joon-soo
Kyu-chul Kim
So-young's father

Seung-hyeong Lee
Director Ahn Jeong-nam
Geum Ho-suk
Min-gi
Yoo Yun-Ji
Park Na-ra

Cheol-min Park
Man from couple