JTBC's first official Mon-Tues drama series of 2021, 'She Would Never Know' (also known as 'Sunbae, Don't Put On That Lipstick'), has revealed a special holiday poster featuring the lead stars Won Jin Ah and SF9's Rowoon!

Premiering next year on January 18 at 9 PM KST, 'She Would Never Know' tells the story of a woman and a man who meet as co-workers at a cosmetics company. Actress Won Jin Ah takes on the role of a chic and stern, experienced marketing team leader named Yoon Song Ah, while SF9's Rowoon plays the role of the marketing team's new recruit, Chae Hyun Seung. 

In the couple's new holiday version poster, Yoon Song Ah and Chae Hyun Seung run into each other at a crowded night club, filled with people celebrating. The cheery poster portrays the main couple of 'She Would Never Know' in a rather different light than their main drama poster, which you can find below. 

Will you be watching JTBC's first Mon-Tues drama series of 2021, 'She Would Never Know'?