Overall I liked this movie. I was a little worried in the beginning because the minute it started you knew it was going to be totally different than the book (and I adored the book!) and that was a disappointment. I'm still disappointed that they didn't follow the book more closely and place the characters in the UK - some of the movie was a little over the top (with the mannequins "speaking" to her, etc.), and her overall personality was more ditzy than the book.
However, I think anyone who had not read the book would find the movie enjoyable and especially hilarious in parts. If you haven't read the book - see the movie first! :)