Grumpy Cat Does Not Look Impressed At Book Signing In Los Angeles (PICTURES)

But that's no surprise, is it?

Yes, Tardar Sauce 'pawtographed' copies of her book, 'Grumpy Cat: A Grumpy Book For Grumpy Days' for hundreds of her fans at the Grove's Barnes & Noble store in LA.

And she wasn't happy about it one bit. Or - wait - was she? It's so hard to tell.

Check out more pictures below. Robert Galbraith, eat your heart out!