My friend told me she wanted to invite my sister to her bridal/bachelorette and passively said, "so that means I'm going to have to invite her to the wedding?" I was honest and said, "if you want invite her to those parties, then you'd have to invite her to your wedding. If you would prefer she not attend the wedding, then don't invite her to the other stuff. Honestly, you don't have to invite her. She won't be offended." I know my sister - she wouldn't. It's all or nothing. And I was always thought it was rude to do that.
Just found out that she emailed my sister invitations to the bridal shower and bachelorette but no wedding invite (everyone either received them late last week or today). I'm thinking, "why would anyone want to spend time with you celebrating or spend money on you, just for you to not be invited to the big day?" Again, it also confirms my friend's desperation for having more heads (some people are like that today. They'd love to have more people attend to things but don't care much for them). She and my sister are not close - they're friendly because of me and have seen each other through the years. I just think rule of thumb - you invite them to one thing, you gotta invite them to all. If you don't want them attending any of them, don't invite them at all.
Bonus question: this is the same friend who is NOT inviting her bridesmaids' husbands/partners. I think this was a money issue but I still find it rude. If they can't afford it, then maybe a more simpler setting or potluck even. Anyhoo, if that's the case, then I won't have to invite her fiancé when my rehearsal dinner comes around, right?
PPS: *Sorry...one more thing. Okay, I am in my 30's now and I have started learning the art of being picky with the people you're around. This situation alone makes me turned off even more and I don't want to be continue being close with someone who doesn't understand how rude this is. It just bad manners and it just leaves a bad taste in my mouth. Again, TOTALLY understand and even encouraged her NOT to invite my sister (especially if that was going to be the case).