Now days, its so hard for LR.. She is almost 6, but wears a size 9-10.. She isn't overweight, but she is tall like me. I try and buy 9s, but sometimesi compare the 9 and 10 and if there isn't a huge difference I buy the bigger so it lasts a bitd longer. That's providing that too big doesn't look , well, too big!
G, well, he still fits in his size 4.. I have started buying size 5s for them to last a bit longer, I could probably buy for him this winter and it would probably still last him next year at the rate he is growing
The cheaper items, I buy for now.. My kids are messy, so it will likely be ruined after the forst month anywats
If its a nice outfit, such as a nice jacket, I choose the size that might last longer, if it still fits then good now