I recall looking for baby stuff in the fall of 2007 for our 4 month old and finding almost nothing for clothing. We did get a onesie at World of Disney (it was magenta in color with Minnie in a princess hat embroidered on it) and I bought a cute Mickey bib at one of the baby care stations. The bib was white with red trim and a Mickey head on it.
I agree that there seemed to be much more for the 2T crowd and up.
Of course, there are tons of stuffed animals to buy. I think we have Mickey in at least 4 sizes --all in my living room right now.