Lovelyz prepared a very special gift for Seoul locals!

On December 21 KST, the members put on a surprise performance for roughly 1,000 unsuspecting shoppers at Times Square Mall in Seoul's Yeongdeungpo neighborhood.

The event, which was held four days before Christmas, featured each member wearing a matching blue Santa Claus outfit. According to their agency Woollim Entertainment, the group performed their singles "Twinkle" and "Ah-Choo."

"The weather is really cold, so dress warmly when you go out, be healthy, and please support Lovelyz, who hope you an end of the year spending a warm time with your loved ones," they told the crowd. "Thank you so much for coming out to see us."

Meanwhile, earlier this week, the group dropped a holiday-themed lyrics video for "Twinkle."