My sister, who is having a baby, lives 3 hours away. She will be visiting for a weekend, and I was thinking of having a "mini baby shower" (I guess really just a little get together!) here for her, made up of family who lives near by. This would just be 5 guests, and my sister and me. I have a close friend here and am wondering if it would be a huge no-no to invite her? My sister has never met her. I would love them to meet, and as my friend is also a mother I thought she would be a nice addition. (and i would let her know this is why I was inviting her) The other reason is that of the guests 3 are of our parent's generation, so it would be nice to add another younger person. What do you think? I'm not a slave to etiquette or anything, just would love to hear if people think this is fine. Thanks.