Empty the contents of the frozen lemonade concentrate into a large pitcher. Keep the canister- you're going to use it to measure the rest of your ingredients.

Fill the 12 oz. canister with Raspberry Vodka, and pour into your pitcher. Feel free to use more or less to taste.

Now fill up the can with 12 oz of cold water, and add that in. 

Add 12 oz, or one can, of Sprite.

Mix all ingredients together. Pour into glasses, and return to the freezer for approximately 2 hours, or until slushy. 

Garnish with lemon slices, or add a sugar rim if you're feeling fancy. Enjoy!