As a special treat for fans, Sunny Hill released a behind-the-scenes video of their comeback with "Monday Blues." �The girls strut their stuff as they march over to the music show program where they will be having their comeback stage, looking business-like and sexy in form-fitting black skirts.

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However, once they get to the waiting room, they break into their cute smiles as they excitedly prepare for their stage. �Check it out above!