I don't even know if Miss Martian has made it into the New 52 which is kind of a bummer since she was an interesting character that was retconned into the old DCU. Now I have no idea how they'd make her work and considering Martian Manhunter is kind of a dick, there'd be no reason for them to be connected. Anyways, that's Sina, she's a cosplayer. Check out the gallery.