I have naturally dark brown hair. What can I use to easily lighten it?

Does chamomile tea work? I love that shade Jessica Alba has.. you know, that light brown, with a tiny bit of dull red. I think that's so beautiful, so how can I achieve that at home because my mother is opposed to permanent dyes and salons. I have heard of chamomile working, so can someone give me step by step instructions on what to do with this chamomile? Or any other suggestions? Grazie :)