Ok ladies, please give me your opinion. We are having a no children wedding. We specifically addressed the invitations and spread word of mouth that no children are invited. I knew it would happen and sure enough we received our first RSVP which included a child. Now, I would be more then happy to call them up and explain that no children are invited. FI wants his mother to do it since it is her niece who is wanting to bring the child. I also understand that The Knot suggests that we say "due to budget constraints" but that is lying and I do not feel comfortable with it. We have the money. We do not want children there. Have any of you ladies had similar situations? If yes, what did you do? If you are thinking you might run into something similar what is your plan? I was thinking I would let FMIL deal with it since I have never met these people but then I feel like I am running away from the problem. Opinions please!