I bought myself the messenger baggallini everyone talks about on these boards, when it came my daughter (10 yrs old) was so jealous, she wanted her own. So I ordered her one too, she loves it and is really looking forward to using it on the trip. With all the codes out there for bagsbuy.com it was pretty easy to get a good deal. So I would suggest getting yourself one first and see if you daughter likes it (if you have time to order one and then order a second once it gets there). The messenger baggallini isn't that big (although I was surprised at how much I could fit in it), so you may just want to get her that.