I read a book about a year ago, and I cannot remember what it was. I will try to remember as much detail as I can about it.

It was a sci-fi/fantasy style of book. There was a big city, and its inhabitants had access to all sorts of magic and wondrous things, and were essentially gods as they could not die or get hurt. To join this city, something random happened while you were sleeping, and you woke up glowing, looking like one of them.

Some big... thing, war, something, happened and what was once a blessed city became cursed. All the magic went away and the people were essentially in perpetual state of living death. You were considered cursed and exiled there if you woke up looking like one.

There was some sort of big political/religious thing going on outside of this city, but I don't remember too much about that. A prince from one of the lands/realms in the world was in an arranged marriage for political reasons, and before he is to marry the princess, the curse happens to him and he is sent to the blessed/cursed city.

Anybody out there have any idea? Thanks for any help you could provide :)

No idea about a title or author, sorry, but the world described sounds something like Mount Olympus or the Alyssian Fields (both Godly places). Any bells ringing?

I'm pretty sure that this is Elantris by Brandon Sanderson. I know for a fact that most Barnes and Noble book stores have copies of this.
Here is the link with a description of the book.

http://search.barnesandnoble.com/Elantris/Brandon-Sanderson/e/9780765350374/?itm=1