After treating us to their second mini album yesterday,�TaeTiSeo�have finally unleashed their music video for title track 'Holler'!

Although they looked delicate and laid back in their teaser pictures, Seohyun, Tiffany, and Taeyeon dress up to project a more bold image for the music video, throughout which they sport quite a number of outfit changes.

Check out the beautiful ladies who go from casual to glamorous in the video above!

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