I just made a huge pile of 2T and winter stuff to pack away. I was trying to sort as I went, and donate stuff that would be waaay out of style in two years when DD2 fits, or is super worn, or has been worn by 4 kids already (some of our hand me downs..lol). but some stuff I get attached to and have memories with..weird, I guess. it's clothing.
I have an easier time sorting infant clothes (when I found out DD2 was a girl, I went through all the old clothes) because some stuff wouldn't work based on season! but once they're older it's all sort of fair game.
if you sort for a younger sibling (or family member/friend), how do you decide what to keep and pack away for a younger child, and what to just donate/toss?