Keeping ALL a child's clothing from babyhood and each year they grow up, takes up space.
I gave all of mine away. To people who NEEDED it.
I never expect it back.
I only kept, those outfits that were special, or more heirloom quality.
I also do not keep all my kids' clothing/baby clothes, because I do not want anymore kids. I have 2 and that is enough for me.
I also give away, my kids' outgrown shoes, baby shoes and as their grew out of them. People appreciate it very much. My kids' things are still in good condition, even their shoes. And this all costs money. The people I give them to, needed it, because otherwise they would not be able to afford, it.