Made with blue agave silver tequila with triple sec, natural flavors and caramel color added. Natural flavors. Everyone loves Margaritas, but no one wants the guilt or the calories. That's why I created the Skinnygirl Margarita. Made with natural flavors, blue agave silver tequila, and lightly sweetened with agave nectar. Per 1.5 fluid oz - Average Analysis: Calories 37.3, Carbohydrates 1.7 g, Protein 0 g, Fat 0 g. Skinnygirl Margarita: the margarita you can trust. - Bethenny Frankel. skinnygirlcocktails.com. 12.7% alc/vol (25.4 proof).