Just finished Shanghai Girls by Lisa See (on my Kindle, of course!). She is the same author that wrote Snow Flower and the Secret Fan (which I also loved). It is a great book about two sisters living in Shanghai in the 1930s and their move to America. Its a very compelling book that kept me captivated on a long car ride with (sometimes) demanding children just behind me.
The character development is great - you can really picture the people in your mind. I really liked how it examined the bonds between the sisters. The depictions of race/culture relations in the US during that time were also fascinating. While a few plot happenings were expected - others were not. I recommend it!