Books for both? DD (8) has just devoured all three Madam Pamplemousse books by Rupert Kingfisher-they are lovely. For the older one, try Eva Ibbotson-the journey to the river sea, the star of Kazan and the dragonfly pool are beautiful imaginative books. I loved them!
For the 9 year old the Klutz Paper Fashions book is just brilliant. DD has played the hell out of it since Xmas. There's loads of different editions, so you could get a fairy one if that's what she's into. Tenner from Amazon, John Lewis or various other sources.