I started this thread so that we could try to narrow it down as to who this girl really is. If it is Amanda, and not Noelle, as originally thought, then this isn't her hometown date and, therefore, puts some doubt as to whether or not she really is F4.
I still don't think that's Noelle. If you look at Amanda's back in the fashion show shot and compare it to the girl being piggybacked then I think we have a match. Also, I think the hair is a match too. I just can't imagine Noelle being the kind of person that would jump on Matt's back for a ride.
The one thing that has me stumped is this. We know Noelle is into show jumping and horseback riding. So, if this isn't her then where are her hometown screencaps?