I'm headed off to a conference in Vegas and it's supposed to be 116 deg F Monday! I am not sure what to pack. I was just going to bring cropped flares and blouses, but now I feel like maybe I need to layer? I'm guessing I'll mostly be indoors, except in the evening, perhaps. Thoughts? I don't have much in the way of professional dresses that fit me and are light enough. I'm looking for an outfit formula here. I just need three outfits.