Witches - Fiction

I've come to notice that I really enjoy reading about witches for some reason. I am not a Wiccan, I'm actually a Christian, yet I've always adored fictional witches, such as Willow Rosenberg, Hermione Granger, the Halliwell sisters, etc. That said, could any of you please reccomend some good "witchy" books. I'm kind of interested in Witch Child by Ceelia Rees. Have any of you read it? I'm open to any kind of suggestions. Thanks!