jennifer aniston, portia's....twisted locks

Can anyone help me? I need to know how to do that hairstyle that has been on quite a few celebrities lately. I've seen it on Jennifer Aniston and Portia DeRosi. It looks like they've twisted strands of hair and then they stay twisted. Sometimes it looks more like a very small curling iron was used. A lot of the hair is kept straight and these twisted pieces are done here and there. Anyone have any advice?????