Put all ingredients together in the blender and blend throughly
Once the ingredients have set up in a slush form, then dip your glasses into the sanding sugar. (Before you dip them, put the rim of the glasses into a small bowl of water so that the sugar will stick to the glass).
Then pour the slush into the glasses and enjoy!
Notes
I chose to use these here, however, you can use any type of glasses that you prefer. I found the sanding sugar at Gordon Foods and Country Kitchen Sweetart but you can also find them here and here.