Česko Slovensko Má Talent is the Czech-Slovak version of the popular talent show franchise, and they had a family of mirror-clad dancers compete. Note: their dancing is really more like gingerly swaying about, for understandable reasons.
Their finale showstopper was Michael Jackson:
Even better is watching them blow the minds of little kids out on the street:
• Mirror Family (YouTube / Česko Slovensko Má Talent)