Me and my partner of 12 years are getting married this year. My partner has a son with his ex and we have him regulary and he is going to be partners best man. I have three children with my future husband that live with us full time. I get on with his ex because its more pleasent for everyone but she's not my cup of tea as a friend. she has said to my partner that she is looking forward to see her son in a suit and getting an outfit for herself for the wedding. i dont know why she thinks that she is invited as i dont want her there! How do i nicely let her know that it is my partners and my day and that i dont want her there? Im not a jealious person but i do feel she's invading my space on my wedding day. Any opinions or suggestions welcome.