After waiting for quite a while I finally found someone, who wanted a Doll Dress Cake as much as I wanted to make one!
This design is heavily based on the requested character from the movie 'Princess and the Pauper' Erika. I had to pin her hair up and wrap it to avoid getting frosting in it.
The cake itself is a half sphere on top of two to three layers of a 6'' chocolate sponge filled and frosted with cookie dough and covered in fondant.
I actually baked another 6'' layer, but after filling the cake I did not need it. The sphere made the dress look way more bulky than it should, but I just wasn't ready to try and carve a dress myself out of a few layers of cake...