Bake cupcakes in White Standard Baking Cups and cool completely on Cooling Grid.
Prepare Buttercream Icing recipe and ice cupcakes smooth with white icing using Spatula.
For crown, tint 3/4 cup icing with Lemon Yellow Icing Color. Lightly mark the crown's points on cupcake with toothpick. Using a zigzag motion, pipe top of crown with yellow icing and Open Star Decorating Tip 18. Pipe double line to create base of crown.
For jewels, tint small amounts of icing with Leaf Green, Violet and Rose Icing Colors. Pipe dots evenly on crown with Round Decorating Tip 3 using green, violet and pink icings.
Pipe name on cupcakes with pink icing using Round Decorating Tip 3.