My 6 year old wears size 6x for little girls. After reading all the reviews, everyone said that the pants are very big and you need to order one size smaller. So I ended up ordering a size 5 and they still fit a little loose despite being a size 5. They look great and don't stand out like other baseball pants. I'm glad I bought these and they have nice thick belt loops so we order a team color belt and socks set (about $10). As these are not floor length pants and have a loose fit, they should fit next year.