Since I keep getting hits on my blog from people Googling "pullet eggs", I thought I'd show another photo. The egg on the left is pretty much a normal, large egg like you'd buy in the store -- if I haven't lost my perspective entirely from not buying store-bought eggs for quite some time. The one on the right is a good example of the pullet eggs we got for a while when the hens were getting started.
They do vary in size all along, generally getting bigger. Sometimes the tiny ones we got later had no yolks at all.