Name of a book with a girl who is made popular by an old woman on a train?

I read this book a very long time ago.


Here's what I remember:





-The girl is not popular but is granted her wish by an old woman on a train.


-The cover is blue with a girl split in two: one being her geeky self and the other in a blue prom dress.


-I think the author might be Caroline B. Cooney





Thanks for any help!

Name of a book with a girl who is made popular by an old woman on a train?
The Wish by Gail Carson Levine





By the way the cover changed it's different now.
Reply:Sounds like Cooney to me. Also, I know a very similar short story called "The Soul Exchange" by Neal Shusterman. NOT the same book, however. Good luck!
Reply:It's definately The Wish by Gail Carson Levine (dunno how you spell her name).
Reply:The Wish. The one where she likes the guy with a unibrow. The author is Gail Carson Levine.