Where can I get costumes for newborns?
A costume for a newborn infant seems illogical, but here are
some sites which may help you:
http://www.cradletokindergarten.com/baby-toddler-costumes.html ,
http://www.costumecraze.com/Baby-Costumes.html , and
http://www.mrcostumes.com/Newborn-Costumes-C385.aspx . Between
those, one should get you what you want.