Old clothes? How do you feel about throwing out your child's out-grown clothes?

Tiffany • Im 23, married to a wonderful man, have a beautiful 4 year old daughter, and currently in Mexico. 🇲🇽🇲🇽🇲🇽
My daughter is 3 now and she's growing out of almost all her clothes. She's my 1st, so excuse me for being a little clue-less. My mother has 4 girls but she saves all the clothes. I however; have no idea on what to keep and what to throw out. Or should I save it all? 
Eventually, I will have baby #2, but I think I'll just start all over with the clothes. 
Someone help me here, any advise is appreciated. Thanks in advance! 

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