It is 10 inches for locks of love. I donated back in July (ended up taking about 14 inches off) and it so weird when they first do it. I am so glad I did because I absolutely love my new haircut and the fact that you are doing it for a great cause helps as well!!
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"Despite all your best intentions, sometimes, fate wins anyway."
i cut off 18 inches of hair after i had my daughter and donated it to locks of love. it felt really strange to not have my hair anymore so now i am growing it back.