The Disney princess Cinderella is a favourite amongst young girls. Having a Cinderella-themed cake not only pleases the birthday girl, but can also provide her with a new doll. Designing a Cinderella birthday cake is much easier than it looks. Making a giant cake that surrounds the doll is as simple as stacking certain sized cakes on top of one another. Although decorating the cake requires some patience and concentration, the finished product can come out looking breathtaking and professional.
Place three 20 cm (8 inch) round cakes in the freezer, as well as a cake baked in an oven-safe glass bowl with an 8-inch rim diameter. Let them set for 40 minutes. This will decrease the amount of crumbs when you cut and assemble the cake.
Mix three cans of white icing with some blue food colouring to reach the shade you want the dress to be. Cinderella's famous blue dress is a sky blue shade.
Remove the rounded tops of the 20 cm (8 inch) round cakes after they are done in freezer. Cut the cake baked in the bowl in half, width-wise. Cut a 5 cm (2 inch) hole in the centre of each cake.
Stack the three rounded cakes on top of each other, layering a coat of blue frosting in between each cake. Add the larger half of the bowl cake on top of the cake stack, add another layer of frosting, and top with the smaller dome-shaped piece from the bowl cake. You should now have a "skirt"-shaped cake with a 5 cm (2 inch) hole all the way through the middle.
Add a thin layer of icing over the entire cake and stick it in the freezer for 30 minutes. This is known as adding the crumb coat, and will enable you to fully frost the cake without mixing crumbs into the icing. After it is finished in the freezer, use more of the blue icing to cover the cake, using your spatula to make swirls in the icing. The swirls will look like billowing fabric.
Wrap the lower half of a Cinderella doll tightly in cling film to protect the clothing from getting frosting on it. This way, the doll can later be used by the birthday girl. Insert the doll into the hole you made in the cake, using more blue icing to fill any extra space in between the doll and the cake.
Decorate the cake with blue sugar and edible pearls. Use a tube of white accent icing to add a pretty line around the doll's waist, where it meets the cake. Outline the bottom edge of the cake with more white accent icing, using a star tip.