Walking along middle road to suntec after CB. At one of the junction, a slim angmo wearing a short flare skirt was waiting for crossing and there comes a gust of wind blowing up the flair skirt. Saw the fair butt cheeks but no sighting of underwear. She oso nvr make it a point to press down the skirt at all. So either she not wearing any underwear or wearing onli g-string. Thats the onli explaination.