I've decided that I don't care how the Chipmunks dress. As long as Alvin is arrogant and sarcastic, Simon is stuck-up and smart, and Theodore is chubby and lovable, then I just don't care. There really isn't more to them than that. It's all you need to make them work, no matter what kind of music they play.
That is a fact.
Also, I have decided that I really like the way they look. Yeah, it's different than the cartoon, but the characters look the way they should. The grin on Alvin's face is very cunning. It looks like he's about to break curfew or sell Dave's car for some extra change. I love it.