I have had a lot of hits on my blog post about making beanies for premmie babies, so I thought I would share my "secret" pattern.
You can find the basic pattern I use at Oodles for Noodles. Carrie has very kindly provided a tutorial to assist with making different sizes and you can download it too. Thanks Carrie!
I make mine in four sizes using DK yarn and a 4.0mm crochet hook.