I am getting married to a the father of my children. We have been together for 9 years and have two children together ages 2 and 4. I was married before at a very young age for 6 months. We are having a small private wedding with just us and our children. I plan to wear an informal gown, I just don't know the correct etiquette. Our children are going to be part of the wedding also and I am not sure about them either. Please help.