The Grammy winning singer has been cast as Scarlett Johansson's best friend in the movie adaptation of The Nanny Diaries. The film also stars Paul Giamatti and Laura Linney. I remember when this book was such a huge deal. It seems to have taken a while to get the movie off the ground but with Scarlett on board I think it will do well. Looking forward to seeing how Alicia is on screen. Apparently she is planning to do the acting thing a lot more so stay tuned.