I want my pillow for my head not my cats bum!

[Chama]

Does anyone have any suggestions as to how I can get my cat to stop sleeping on my pillow? She came to me when she was around 8 months old (she's about one now) as a foster cat but there is a very good chance she will end up staying with me as I think she's great. I adore her and I have no issue with her sleeping on the bed with me but I wake up and she has taken over my pillow. I move her down the bed when she does it but she waits until I'm asleep and makes her move. I could close the door but what fun is that?