I just ordered this for my 9YO for our upcoming Spring Break trip. Haven't received it yet, but it got good reviews, seems easy to maneuver, meets the size restrictions for carry on, and she picked the color, so it meets her "cute" standard. They also have some with an owl print that I thought were super cute.
https://www.amazon.com/gp/product/B00Z70KYLS/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1