Singer Byul known for her cute appearance performed a sexy number on "Immortal Song 2."

KBS "Immortal Song 2" episode today featured Byul performing a cover of Lim Joo Ri's "Thick Lipstick" as the third performer followed by Hwayobi and Son Ho Young.

Before her performance she shared, "My husband Haha told me to just go and enjoy the stage. Please enjoy the song."

Her appearance on the show brought a lot of attention as she will be competing for viewer ratings as "Infinite Challenge" which her husband Haha appears in.

Byul captivated the audience with her appealing voice depicting the sad lyrics of the song.