On a daily basis, it would add 300 calories (that's with whole milk and no whipped cream) or 400 calories (with whipped cream) per 16-ounce beverage. Adding the word "white" adds even more calories.
For a delicious, low carb snack, combine 1/2 cup (74 grams) of blueberries with 2 tablespoons (30 grams) of homemade whipped cream. You can make this by whipping heavy whipping cream without sugar.