I am only 13 weeks so its a bit early to start planning a baby shower or even talking about it, but this weekend my sister-in-law told, me without being asked, that she and my other sister-in-law would not be able to throw the baby shower. She said it was bad etiquette. I have read all kinds of stuff saying that's not true anymore moms and sisters are starting to throw them. My question is does the old rules of etiquette still apply? Did they ever apply to sister-in-laws?