Have you tried Kohls? My tween nieces shop at Aeropostale and Hollister. I've never been inside so I can't comment on the styles.
And my "I hate the feeling of jeans" DD who is also 8 is now living in these from JCP. We have 2 pair of the long length (1 dark and 1 light wash) and a pair of rolled hem ankle length/capri. This child hasn't worn anything close to jeans since she was 2yo. I'm in heaven now that she loves these.
Mom to two amazing DDs ('07 & '09) and a fur baby.
Gluten free since Nov '11 after non-celiac gluten sensitive diagnosis. Have had great improvement or total elimination of: migraines, bloating/distention, heartburn, cystic acne, canker sores, bleeding gums, eczema on elbows, dry skin and scalp, muscle cramps, PMS, hair loss, heart palpitations, fatigue. I'm amazed.