Using 10in cake rounds, Remove cake layers from cake pans and place them on cake boards.
Using a cake leveler, remove the domes from the top of the cakes.
Starting with the dark chocolate cake layer first, scoop out 1/3 of the dark chocolate frosting onto the top of the dark chocolate layer and spread evenly.
Place the milk chocolate cake layer on top of the dark chocolate.
Scoop out 1/3 of the milk chocolate frosting onto the milk chocolate cake layer and spread evenly.
Place the white chocolate cake layer on top of the milk chocolate frosting.
Repeat steps with 1/3 of the white chocolate frosting.
Scoop the remaining icing into their own piping bags.
Cut the tip off the piping bags.
Using the dark chocolate one first, pipe two rings around the outer edge of the cake.
Repeat steps with the milk chocolate and white chocolate.
Using a cake scraper, smooth out the frosting.
Using the chocolate ganache, pipe the ganache all around the top edge of the cake and allow it to drop down the sides.
Using the remaining frosting in the piping bags, pipe dollops of the 3 different frostings around the top.
Sprinkle chocolate curls around the top.