's ChoA and Way are teasing their upcoming holiday duet song ""!The twin sisters previously promoted together under the unit name, and they'll be coming together once again for a Christmas track! On December 7, ChoA posted a teaser of her recording in the studio on Instagram with the message,Way also posted,Check out the teasers below, and stay tuned for ChoA x Way's duet!

Christmas is coming ??? ??? ???? #Christmasforyou @minjinchoa #171216 A post shared by ??? WAY (@baysunny) on Dec 6, 2017 at 9:24pm PST