Wow everything that was suggested was on my list! LOL! Old Navy has some good online deals and sales - just be diligent to look for them. We also LOVE Children's Place jeans, especially for girls (they have cute ruffles and glittery jeans). But Children's Place clothes run small so you may want to get her size 24 mo if you go with them. And as someone else said they last a LONG time.
T J Maxx also has a great selection of baby and childrens clothes
Kohls and kohls.com has some cute jeans and shirts for really cheap. I usually get them 2 for 12.00 so you can get a shirt and jeans or 2 pairs of jeans etc... They are really cute and very comfy!
i normally shop children place for jeans for my kids. you can usually get them on sale and if you google childrensplace coupons you can get a code for like 20 to 25 percent off. i love them cuz they are good quality and i pass them down between my boys and now to my nephew and they are still in great condition
The Children's Place has super cheap jeans. Its buy 2 pairs for like 20 dollars.
Old Navy has cute, cheap jeans for babies.
ebay i always get my sons clothes there