What would you do if you were shopping at the mall and you looked over to your left and saw Taylor Swift shopping three feet away from you?

:-l it won't happen but whatever..
I would probably say hi and tell her how much i love her music, and i'd tell her to keep doing what she's doing. :)

Ask for an autograph.

i would go over to her talk to her and when i got back with my mom i'll keep on saying,"OMG I TALKED TO TAYLOR SWIFT!"