A solid and perfect mall for a Vegas tourist who can only window shop and drool at the other in-casino designer boutiques that abound the strip. Fashion Show Mall has a Zara and The Body Shop which are two stores in Michigan I cannot shower myself with goods from, and other upper-middle class stores that are less common at your average town mall.
If you must shop in Vegas (there are far too many more exciting and memorable things to do), Fashion Show is the place.