@Bhutan - I heard about that case and it was sad and it is not uncommon. I think that there should be some financial penalty that the party breaking the agreement has to pay because when you wait until the wedding day to decide that you do not want to get married the money has already been spent and it is not fair to the other party.
I know that a lot of breach of contract disputes occur in Hollywood. There have been many cases in which there was a breach of employment contract regarding an actor that agreed to appear in a film and later changed their mind and was sued.
Kim Basinger was sued for a breach of contract and actually filed for bankruptcy because the amount that she was sued for was huge. It is only fair because there is a lot of planning that goes into these movies and what do you do if the star decides that they do not want to participate in the film?