Girls' Generation-TTS (Hangul: 소녀시대-태티서, also known as
TTS,
TaeTiSeo, or
Girls' Generation-TaeTiSeo) is a subgroup of South Korean girl group
Girls' Generation, formed by
S.M. Entertainment in 2012. It is composed of three Girls' Generation members:
Taeyeon,
Tiffany, and
Seohyun. The group released their debut album,
Twinkle, in 2012. Their second studio album,
Holler, was released in 2014. 'Holler' was followed up in December 2015 with a Christmas EP entitled'Dear Santa'.