A traditional margarita can be high in sugar because it often contains added sugar or syrups, such as simple syrup or triple sec. A skinny margarita typically uses a low-calorie sweetener such as stevia, agave nectar, or fresh fruit juice instead of added sugars or syrups, which can significantly reduce the sugar content. Some skinny margarita recipes even omit the sweetener altogether and rely solely on the natural sweetness of fresh citrus juices.