Girls' Generation TTS

소녀시대-태티서,少女時代

Girls' Generation-TTS(also known asGirls' Generation-TaeTiSeoandTaeTiSeo) is the first official sub-group of South Korean girl group Girls' Generation , formed by S. M. Entertainment in 2012. The sub-group is composed of three Girls' Generation members, Taeyeon , Tiffany , and Seohyun .