The amount of calories in coffee is meager, it will not help you gain weight. Yet, if you start each day with a latte, then you should think a little. Because there is a lot of milk in the latte, the amount of calories is more. There are also sugar levels. So latte can affect your weight.  If you take an ice vanilla latte at Starbucks, it won't have much effect on weight. Starbucks reduces the extra calories. You will also get the test of vanilla.