There also might be a Once Upon a Child near you, which is pre-owned kids clothes
It took me a while to get into the swing of things here. A lot of the time the price on the tag is not actually the price at the checkout, things are often on sale. I would start with target, you could give kohls, Marshall’s and TJ maxx a try too. I do a lot of shopping online these days, I just bought a bunch of baby clothes from Kate Quinn.
Walmart has Garanimals, which are cute and inexpensive (like $4-5 per shirt) Target has a ton of really cute baby clothes, mostly for girls, though. They're a bit more than Walmart, but still not bad You can also order from The Children's Place and Old Navy, and they have sales often