Are you looking for something that's not a studio like a professional photographer? If so I highly recommend Lamb Photography http://www.thelambphoto.com/ . The prices are very reasonable in terms of professional photography, and the photographer is very understanding of children, being a mom herself. I've been having take pics of my child every 3 months for a while now, as well as a couple of family photo shoots including Christmas pics. She's great to work with.
Otherwise there are studios like Kiddie Kandids and Picture People. Both of which are pretty pricey in terms of studios compared to Target, Sears and JCP which is why I never went with them. I've used JCP and Sears before, Sears I was happy with, JCP, not so much.