Selling and giving away baby clothes

It seems I'm always going thru the outgrown clothes for the girls. It's easy enough when Tolla outgrows something b/c I just put it in a box for that size and save it for Teagan. But, recently, Teagan has started to outgrow her clothes. As I take the outgrown clothes out of her drawers I hold them up and fold them gingerly remembering her wearing each outfit. It's so dorky I know but I do it. Then I decide whether to sell it or just put it in a box to my bestfriend in Florida. I already sent her a big box of newborn stuff and now I'm getting ready to send some 3-6 mos stuff. How much handmedown stuff is too much? I guess she'll let me know when I should stop sending. I just hate to think that they won't get another baby to wear them. Some of the outfits were so cute and it's touching that part of me that is so sad to think that I will not have a baby that small again. Maybe, just maybe down the road I'll have another one but right now I don't think that will happen. I would love to have a little boy if I could some day but for now I just have to put away that part of my life and that means purging the clothes. I know it seems so irrational to feel this way. I love my girls and how they are growing and changing but still.....it's those tiny clothes that get me every time.