Yuri is wearing some shiny black pants but I cannot tell if they are spandex disco pants. I found another video of her performing in similar pants, and those pants did not have back pockets, button & zipper. So they might just be shiny spandex tights. I believe her dancers are wearing spandex disco pants though. The men are wearing purple ones and the women red.
![](https://i.ytimg.com/vi/f4VAXncSVU4/mqdefault.jpg)