Goth icon, Emily The Strange, may be a blatant copy of a 1978 character in the book "Nate the Great." Look at the obvious similarity between Emily and Rosamond, both in their looks, cat poses and words. Very "strange" indeed me thinks.
http://laughingsquid.com/was-emily-the-strange-based-on-rosamond-from-nate-the-great/ Via Laughing Squid
If you know anything about Emily you would know that A) a lot of Emily artwork is an homage to other characters and B) Hot Topic only sells her merchandise, they have nothing to do with making it.
The other Emily stuff isn't the same as this but it's undeniable that these two are pretty much the same artwork. They're so similar there wouldn't even be enough differences for a spot the difference panel.