KARA's members Nicole and Goo Hara revealed a picture at Psy's concert.

Today, Nicole posted on her Twitter, "We learned so much at Psy's concert today. Hope your album goes well! I'm a mother father Gentleman~~ Yeah~~~" along with a picture.

In the picture, Goo Hara and Nicole are posing for the camera after attending Psy's concert. Goo Hara is wearing a cap, showing off her clear skin, and Nicole is also smiling brightly while holding up a V with her fingers.

Psy held his concert 'Happening' today in Seoul, performing to more than 50,000 audience members.

Photo Credit: Nicole Twitter