If you caught a glimpse of Karolina Kurkova at last night's Jay-Z concert at Carnegie Hall, you might have been wondering: what exactly was she wearing? It looked like the supermodel slipped a leather skirt over her sweater dress, but upon closer inspection, we discovered that the look is actually all one piece. In fact, the dress is a piece from Alexander Wang's latest Pre-Fall 2012 collection. It's a bold style for sure — one that we're still convinced looks a little like a miniskirt pulled over a sheer and knit sweater dress — but we're letting you make the call. What do you think of Karolina's look?