SEE ALSO: Watch Girl's Day's hot and spicy 'Something' MV teaser!

Following the reveal of leader Sojin's teaser, it was time for maknae Hyeri's teaser as Girl's Day tweeted, "Comeback D-4!! Doo doong !! Girl's Day's maknae Hyeri's photo has been unveiled today�>.

Girl's Day hinted on a mature concept and sure enough, the black-and-white teasers highlight the girls' sexy charms, guaranteeing to drive fans wild with each day leading up to their return.

Countdown with us as Girl's Day get ready to show us 'something' with their comeback on January 3!