This question already has an answer here:
I'm trying to find a fantasy book I read about 15 years ago, or so. It was about an upper-class society that wore masks, and anybody who saw one of them without their masks was killed. There was a journey going on to the castle of the king and queen, and the main protagonist, a juvenile, falls in love with the child of the king and queen. I know there was a sequel to this book dealing with these two being kidnapped, but I cannot remember the author or the title. Any help you can offer would be most appreciated.