DD is getting all new clothes at the beginning of this school year because we moved over the summer and didn't know which school she'd be going to (uniform, no uniform, if uniform which colors?) Plus my DD has been growing so much, she hardly has any clothes in her closet. I like to buy as I go but lately it has been very difficult for me to find anything if DD is not with me. She has to try everything on because I really can't tell anymore if something will fit her or not.
So I'm watching the sales and dragging DD with me when I see a place that is promising. We have money set aside just for clothes for her so I can buy when we find a deal. I try to set dollar amount limits in my head. I used to limit clothing to $5 per item, except for coats, dresses and shoes where I'd go up to $20. I've budged on that limit to $10. If I can find something for DD for under $10 it is a no-brainer, especially stuff she can wear as apart of her school uniform.
I'm still reluctant to buy clothing in sizes too far ahead, mostly because she is growing and her body is changing so I'm not sure what will ever fit. We're concentrating on keeping her in clothes NOW but scaling down the number of items she owns. She used to have a huge wardrobe. Not anymore.