BEStie release an MV teaser for 'Zzang Christmas' featuring Yoo sae Yoon.

The teaser is very cheeky and has a little background story about their upcoming collaboration. It started off in Yoo Sae Yoon dropping a paper with some lyrics he has composed. BEStie picked it up and sing to it.

The girls and Yoo Sae Yoon are going to give you a happy carol. It will be released on December 17.
Watch the teaser for the meantime.