Having been promoting for more than a month, Girl's Day are wrapping up promotions with their goodbye stage on tonight's Mnet M! Countdown. Girl's Day have exceeded the expectations of many, and as a rookie group, that's truly a hard accomplishment to achieve. Music fans were left speechless by the radical transformation the girls underwent for their title song, "Twinkle Twinkle". Watch them perform "Twinkle Twinkle" one last time below!