Has this happened to you? From talking with friends it seems to be pretty common. A parent is planning a birthday party for their child and invites are sent and RSVP and then the day of the party there are mothers who bring extra children to the party and expect them to be included. I mean these are not at home parties but parties that cost $15.00+ per child and it does get expensive. My one friend had to hire a extra lifeguard at a pool party at a health club for $50.00 because one Mom brought 3 other kids. When you have a party at these places the parent can leave and go shopping so it is not like they are stuck there. We are talking about parties for older kids 8+ and yet these parents still bring all these other kids. Of course it becomes a problem with goodie bags and food. Most of my friends get angry but will not confront anyone. I always feel no matter what I will have 4 extra people so I kind of just add it in. With my kids friends I usually invite brothers and sisters since they are all neighborhood friends. So is this now the norm????