I was just wondering what the etiquette is on invites to the bridal shower. I know whoever is invited to the shower should absolutely be invited to the wedding, but what about the other way around? I didn't think it was necessary to invite every female invited to the wedding to the shower, but mother & FMIL seem to think differently. I thought the shower generally is the people closest to you, not your finance's-cousin's-girlfriend and old family friends you haven't seen in 20 years. Plus I really don't want my sisters (MOHs) to have to pay for something that is essentially half a wedding. That being said, I also don't want to insult anyone or be disrespectful.
Thoughts?