Love this top, especially with the matching high-waisted bottoms! Although there are no structured cups or padding, it still feels fairly secure and the sheer panels are very cute and fun. That being said, my bust did tend to move around a bit during pole class, so while I had enough support to be comfortable, I would recommend nipple pasties if you are doing anything active and worried about slips. I wear a 28/30DD in bra size and the XS fit nicely.