All. Time. Favorite. Store.
If I had a million dollars, I'd blow it all on a cocaine binge (kidding!) and this place (not kidding!).
They have a great selection of cutting edge designers like Alexander Wang, Proenza Schouler, and 3.1 Phillip Lim--all under one roof! It's fabulous! I challenge you to find a Proenza Schoulder PS1 bag (or a selection this large) anywhere else in Vegas.
Moreover, Barneys is the only place in Las Vegas where you'll find the eco-friendly Monique Pean jewelry line. It's expensive, but it's fossilized wooly mammoth, recycled gold, and conflict-free diamonds. I'm not going to sermonize you, but I know staying away from blood diamonds is important to some.
Overall, I think my favorite thing about Barneys is that they don't skew ostentatious. They're more about edgy fashion than in-your-face displaying of brand labels (I get it, you blew a lot of money on that Louis Vuitton). I'm really happy this store is in Vegas .....although I can't afford 90% of it.