It definitely gets better as they get older. Mine is now size 8 on the bottom and 10 on top because anything less than a 10 is too short. Still have to get adjustable waists and her jeans are barely long enough, but by tweenage there's enough ultra-tight harlotwear on sale that she fits into the slimmer stuff - fatter kids must look awful in them. Honestly I don't know why I bother trying to get her full length pants for winter, she rolls them up to her knees or mid-calf and pulls her socks up so far the heels are well above her ankles. It looks absolutely terrible, like a clown suit (most of her socks are striped) but I still haven't convinced her it looks bad.
Lol, mine's the same. Isn't it a great age! She's put clothes together, that, yes, are nice....with something else! & insist there's nothing wrong with them & that they look good. So frusterating sometimes!