I'm going to tell my fiance her best friend can't come to our wedding
Why don't you want her at the wedding?
I met her friend and I didn't like her as a person
It's rude to control your partner like that. You might not like her but your partner does. Avoid her friend at the wedding if you don't like her.
As long as it's my wedding I can do whatever I want.
I just think you should compromise with your fiance since it's both of your weddings.