f(x) will be returning soon and here to start off the teasing process is Krystal, who has definitely surprised fans with her dark look!

According to SM Entertainment on the 27th, f(x) will make a comeback with their 3rd full-length album 'Red Light' on July 7! This will mark their comeback in a year since their 2nd album 'Pink Tape'. 

In honor of this big announcement, fans were treated to Krystal's teaser image which hints at a dark, almost gothic-like concept for f(x)'s upcoming comeback.

Get ready stop in front of f(x)'s 'Red Light' on July 7!