I have 50 photos that Aria can be -A. I had read 70 theories that Aria can be A. But ofcourse I won't write down all of them. But %85-90 Aria is -A. 1. reason is: The girls only began receiving text messages from 'A' after Aria returned from Iceland. 2. reason is:2. In season 2, Mona even refers to Aria as "Big A" while trying to catch up with her in their high school hallways. 3. reason is: 6. In the season 2 finale, the girls are on the hunt for the "Black Swan" at the masquerade ball after seeing a sketch of the costume in 'A's' lair. Eventually, we find out Melissa was the one behind the mask - but that 'A' told her to wear it. Coincidentally (or not?), Aria is dressed-up in a red and black striped gown at the soiree, a dress that strangely resembles an old Black Swan poster. 4. reason is: Aria's handwriting on the Halloween train during season 3 resembles 'A's' handwriting.... perfectly.
