Well I am thinking of updating my daughters room and while I was searching for some inspiration I came across this kids bedroom Grant Gibson did for the Elle Decor 2010 show home. I love that he used items you wouldn't necessarily think of for a girls bedroom but the overall feel of the room is youthful. The only problem is my four year old says everything must be pink!
Above images from here
This is another girls room I have always loved
This picture is from Elle Decor
I am defiantly leaning towards pink, grey and a touch of green as the colour scheme.