I found this picture posted on Weird Asia News. It could easily be real. Especially if that woman has some experience handling tigers (though she doesn't look like she does). Or the tiger is really tame. My hunch is that it is real. However, I wouldn't be willing to sit on a tiger's back. My cat is vicious enough, and she's a lot smaller. So assuming that it is real, I wonder what the story behind it is. Maybe you pay a buck and have your picture taken with a tiger, and hope you don't get killed.