On 26th December, through official SNS, KBS revealed all the artists will be performed at KBS Gayo Daejun 2013. Especially, the list of all the artists mentioned Girls' Generation, who will also perform on the night.
Artists will perform at 'KBS Gayo Daejun KBS 2013' according to the list, will include, Girls' Generation, SHINee, EXO, Lee Hyo Ri, IU, INFINITE, BEAST, 2PM, Miss A, 4Minute, KARA, Sistar, K.Will, BIA4, A Pink, Girls' Day, Secret, Dynamic Dup, Huh Gak, Lee Seung Chul, Yoo Hee Yeol and Crayon Pop.

KBS Gayo Daejun 2013 will be hosted by 3 MCs Lee Hwi Jae, Yoon Si Yoon and Suzy (Miss A). The show will be directly aired on 8: 50PM, on the night of 27th December.

Source: TVReport
Translation: totoropie @TheSoneSource