In a blender, combine the lemonade and ice cubes. Blend until smooth and slushy in texture.
Pour half of the slushie mixture into a tall glass.
Slowly drizzle the blue raspberry syrup over the slushie, allowing it to create a layered effect.
Add the remaining slushie mixture on top of the blue raspberry layer.
Slowly pour the grape soda over the top, allowing it to create another layer.
Top with whipped cream and sprinkle with edible glitter or star sprinkles for a galaxy effect.
Serve immediately with a straw or spoon.