My mom is starting to plan a baby shower and asked me if I wanted to invite my MIL. The shower guests will be my family, a couple of friends, and people my mom knows. What is the proper etiquette? I don't feel it's the same as for bridal showers (where MIL and SILs were invited) not sure why I feel this way. Although it hasn't been discussed I'm guessing my inlaws will be doing their own shower because they have for Dhs cousins.