Girl group f(x) member Sulli revealed a picture of herself in a security guard outfit.

Today Sulli posted on her me2day, "It's raining, be careful!" along with a picture.

In the revealed picture, Sulli is in a security guard outfit.

Internet users who saw this commented, "I wonder what scene she's filming", "She's cute no matter what she does," and "I'm jealous of her skin."

Sulli is currently playing the role of Goo Jae Hee in SBS drama "To the Beautiful You."

Photo Credit: Sulli me2day