One of my best friends is much older than I am or the rest of the wedding party, my fiance claims that as much as he likes her she shouldn't be in the wedding party due to her age. One of my close friends who is like a mother to me says that even if she is much older if she's my best friend then she should be in the wedding party. His mother agrees with him but came up with the solution that she should be the wedding planner that way she still feels involved and is a part of the wedding. I don't know what to do. Any advice?