There's still little information about this upcoming variety series 'Pajama Friends', but it has confirmed the 4-member, MC lineup: Song Ji Hyo, Jang Yoon Joo, Red Velvet's Joy, and Cosmic Girls's Cheng Xiao! Through 'Pajama Friends', Song Ji Hyo will be teaming up with Kim Jo Hyung PD, known as the former main PD of 'Running Man', once again. 

While it's unclear whether or not 'Pajama Friends' will be a talk show, game show, or a another unique format, it seems the program will be going by the theme of "Fun where you find yourself." 'Pajama Friends' is set to begin filming some time in August, aiming for a broadcast date some time in mid-September.