If you're looking to spend more money than what you already have on your hotel, drinks, and gambling combined, then definitely take a stroll through the Forum Shops at Caesars Palace.
Every high-end store you could possibly think of like Christian Dior, D&G, Gucci, Louis Vuitton, Tiffany & Co., and much much more is available. Another plus too is that it is an indoor mall if you're also trying to avoid the heat.
They have maps all over the place, yet the layout can be a little confusing still... so also make sure to note where your local concierge is as well!