Don't know when you are having her party, but I have lots of Tinkerbell items that came from Hobby Lobby and a party store.
Could offer them to you very inexpensively.
My daughter's best friend (17) is a longtime Tinkerbell fan and her room is still done in Tinkerbell. She has a costume with wings, wig, eyelashes and all. You might consider having her stop in during the party for a photo opportunity.
She is a wonderful young lady who lives in Frisco, very responsible, and great with kids. She was a captain on the Frisco Drill Team, has great babysitting references and works for an optical doctor this summer prior to leaving for college in the fall.
If interested I can get her number for you.
Make memories!