Though promotions are over, the girls are still killing it with '4 Walls/'
The SM Entertainment group's tour will follow their first domestic solo concert in January.
f(x)'s youngest member, Krystal Jung, went on the first blind date of her life in the show's first episode.
Images of the members in school uniforms filming for the show were recently discovered on Facebook
The f(x) member partook in an ad campaign that featured numerous Asian celebrities.
Korean pop stars and actors such as 2NE1's CL and Dara, the Jung sisters, and Rain, came out in their stylish best to support breast cancer awareness.