Is it okay to let kids wear shoes that are one size too big for them?

Like what Anonymous said, I'd agree with getting a size bigger if you are getting sports shoes because you'd need to consider the socks as well - but otherwise, it's better to get the right size! If your child outgrows shoes very quickly, you can consider getting secondhand/hand-me-down shoes - shoes and clothes are some of the things that can be passed for generations and through many families before the end of its life :) Otherwise, you can buy them but you don't have to go for the expensive/popular brands if you can't afford them regularly - all you need is good support and comfort in the shoes, the brands don't matter!