Prepare the syrup by combining the white chocolate chips, water, and blue food coloring. Warm them up in a microwave or steam them in hot water and mix until they have melted into each other. Drizzle the syrup on the sides of your cup.
Blend the frozen mango pieces, mango sorbet, and milk until smooth. Add the pink food coloring to your preferred intensity and blend until thoroughly mixed. Add the crushed ice and pour the pink mixture into the cup.
Top it all off with some whipped cream. Sprinkle the raspberry powdered drink mix and pink sanding sugar. Enjoy your homemade Unicorn Frappuccino!