If you cannot, for some outrageous reason, visit the Alexander McQueen: Savage Beauty exhibit at the Met, then I highly recommend you invest in the book (also available on Amazon).
As soon as I got home from the exhibit, I read the book cover to cover. Then, I read it again. It has a special place in my apartment now. Not only does it cover all the pieces in the exhibit, but there are several interviews and statements about McQueen, including a brief biography. Just reading it alone was fascinating enough (of course, I did enjoy looking through the pictures as well).
Here are a few (just a few, mind you) highlights from the book/ collection.
The cover-quite a cool holograph