What outfit should I wear to this meet and greet?

-What outfit should I wear to this meet and greet?

Hi. Me and 2 friends won this radio station contest to win a meet and greet with Britney Spears and Jason Trawick. The concert is in 2 days. I am 13. Now my aunt is taking me. She bought the 42$ shirt I amde for the concert but now I want to dress like Britney. Here's the only things I could find tell me which outfit you think. It has to go by my parents approval too.



First outfit:

http://www.flickr.com/photos/63594855@N04/5968278191/in/photostream



Second one:

http://www.flickr.com/photos/63594855@N04/5971844226/in/photostream/



Which one do you like the best? Also, its 3 1/2 hour drive to the arena and its gonna be 89 that day and sunny.Neither, sorry :S