Try Kohl's, they have a nice baby section. Also, your department stores such as Macy's or Boscov's. Boscov's has a nice selection and there is always some kind of sale going on infants and kids clothing. I bet Target has some good things
as well. I hope this helps.
Another thing to consider, you may want to choose one of the outfits that you receive at your shower. I got so many cute things at both of mine that I am planning to pick 2 from those items ( a smaller and bigger size since I don't know how big
the baby will be).