94's liners (miss A's Suzy, KARA's Jiyoung, 4Minute's Sohyun and f(x)'s Sulli and Krystal) performed at Music Bank year end special aired on 21st December.
The girls prepared a special Christmas medley performance on the show forming the 94's liners group as all of them were born in 1994.
For those who have not watched their performance,enjoy the video below