I have two dds. My dd12 is about average size although thin. She can wear zeros or 00s in juniors lines, though, which offers her options in clothing. My dd10 will be starting middle school (6th grade) in August. She's in about the 3rd percentile for size at her age and is also thin (size 8 slim, 56 lbs.). Her size isn't a concern in and of itself in that most of our family is very, very small. There are a few average sized people like dd12, myself (5'4', 115 lbs), my father (5'10"), and my paternal grandmother (about 5'4"). The rest of the men on both sides of the family range from 5'3" to 5'7" and the women from 4'10" to 5'1" or maybe 5'2".
She, however, really, really wants to be able to wear the clothes from stores like American Eagle and is instead stuck with things like Gap Kids. I have found that some of the Gap Kids jeans look fairly similar to the juniors versions of jeans, but the dresses and shirts that fit her at most stores look like Gymboree fare. I do realize that both American Eagle and Aeropostale have kids stores, but there aren't any near us.
Does anyone have any recommendations for juniors/pre-teen looking clothes that are not dorky for a really small 10 y/o?