�On the evening of September 6th, Rainbow's Go Woori promoted fellow labelmate, KARA�through her personal Twitter page.� She left a cheerful message saying, "Lalalala~~ Wow I keep singing the lyrics all day long, Kara's new song is the best! Fighting!" She also posted a photo of herself with headphones on and raised her thumb indicating how awesome KARA's new song, 'STEP'� is. In addition, netizens responded back to her post, " Your so pretty and cute..." and "KARA, Rainbow fighting!" On a side note, KARA�made a comeback with 'Step' six days ago. Check out the music video below if you have not! Source + Photos: Twitter via OSEN