Knit 1 for the Road has a great interview with micro-knitter Althea Crome, who made Coraline's star sweater. Althea almost failed:
they told me about the magical star sweater they needed—it would have to sparkle. I went on a tireless thread quest for about a month—finding everything from stainless steel thread to paintable sparkles and then set about knitting swatches and sending them to Laika. None of them looked right on screen and because of a time issue, it was looking like my hopes of making something for this wonderful project were fading. In fact, at one point, they told me that they were going to have to start shooting soon and would not be able to wait for me to find the right combo of threads.Read the entire interview here. It's really a wonderful story about the internet enabling people to pursue their interests.
If you haven't already seen it, here's the Coraline video featuring Althea:
*Buy Coraline toys at eBay and Amazon.