If you’re looking for really cheap, Penina’s in Boro Park sells children’s clothes at cost as a chessed. They have limited but classic styles. They are in the low 40’s and there is no sign in front of the store, on the same side as Peretz. All clothes are washable.
Peretz has very nice girl’s clothes. They are good quality and washable. They tend to be a bit more expensive than Penina’s but still very reasonable.