Like the other members, Seohyun also takes on a laid-back yet glamorous look throughout her teasers, leaving us to wonder about the comeback concept.

The girls also brought out their pre-release track "Whisper" today to leave SONEs on the edge of their seats for the full release of TaeTiSeo's second mini album 'Holler', which is set to drop on the 16th online.

As mentioned before, the girls will also be holding a comeback showcase on the same day at Seoul Olympic Park. They will then kick off their comeback stages starting with 'M! Countdown' on the 18th with title track "Holler" as well as another new song.