8" round and 5" ears. I went through A LOT of Wilton "No Taste Red" to get the red buttercream. WARNING: It'll stain your teeth and probably your shirt (as observed on two-year old faces and clothing).
I made a stencil to create the ears, but my greatest challenge was getting them from my sil-pat mat onto the cakes themselves. Thus, they had wrinkles in them I wasn't able to smooth out. AND, my buttercream was so crusty under the ears, I wasn't able to get those flat or smooth either.