But after I scoured Pinterest and gathered up my courage, my response to Vanessa was, Sure! No problem! I had seen enough variations on the giant cupcake theme to believe that I could manage it.
I then took a long serrated knife to the bottom and narrowed the bottom into a cupcake liner shape, and the top into a massive frosting swirl. (More on all that extra cake another time!) I laid the pink fondant over the top of the cupcake liner, just as you would do any normal layer cake, and pressed indented lines into it with a clean ruler. In retrospect, I think I should have wrapped the fondant around the side instead of draping it over the top, to lessen the risk of tearing and also to avoid stretching and pulling to smooth around the bottom. However, that would have resulted in a seam at the back, so maybe I did make the right choice.
It's a bit nerve-wracking to start shaving off cake from your cake, knowing there is no undo button to let you put it back on if you hack off too much. I ended up shaving one side of the swirl down a bit more than I should have, and ended up having to repair the damage with more buttercream.
But who doesn't love more buttercream. I mean, come ON.
Overall, I was very happy with how it turned out (and so was Vanessa), but there are plenty of other little issues that I will always notice when I look at pictures of this cake.
This is also the cake that taught me that you should keep a mega cake like this in the fridge overnight before you let anyone drive it to their house. But that's another story for another day. I'm just happy Vanessa is still talking to me.