...one word: BOOOOOOO!!! This movie was nothing like the book--not even a little bit. The books are so endearing because of the British charm and wit, and I can't for the life of me figure out why they used a British actress, but set the movie in New York, and made her an American!?!??! Then to boot, they didn't stick to the story lines at all! Instead of Becky getting into all sorts of funny situations and trying to manage her way out of them in hilarious lies and shenanigans, everything just magically worked out in cheesy fashion. Beth and I found ourselves cringing on several occasions rather than peeing our pants due to the hysterical antics of the book's Becky.
I would rent this one, if you really want to see it. And if you are a fan of the books, go in with really low expectations!