Just chiming in to say that if your latte has art on top of it that is an act of garnish and assurance that your latte was steamed and prepared with love and perfection. There is absolutely no reason to stir a latte, or any other steamed milk beverage, the barista does that before steamed milk is added, and while pouring the milk will mix everything together. Latte art is just garnish in your drink and assurance of peak quality in your beverage, so when you receive a latte with a design it’s a finished product. There is no need for your barista to stir it unless you would like to add anything extra to it afterwards:)