Addressing wedding invitations?!

simplysarah114

We just finished sending out our Save The Dates, and since they are informal I simply addressed them to the name they prefer, their nickname.
I've read online though that for formal invitations you should address the invitations with their full name. For example, on the save the date I addressed it to Patty, since that's what she goes by. Her real name is Patricia.
Should I address the wedding invitation to Patricia, even though she's never called that? I want to follow etiquette, but at the same time I don't want to offend anybody by calling them something they don't want to be called. I think my mom's exact words were, "her real name is Patricia, but only people that want to get smacked call her that." I'm sure a lot of people won't care either way and would get over it, but I'm not sure what to do!

CMGragain

It is never improper to address people with their proper titles and legal name.

Ms. Patricia Doe, or Miss Patricia Doe.  Either is correct.

photokitty

I would use formal names unless you know someone hates their formal name and is bothered by it. If someone told me not to call them by their full name, I wouldn't. I think it is impolite to disregard someone's direct request. If they go by their middle name I would include their first initial on the invite.

Also if you don't know if the name is short for something ask or use the name you know. For example, my grandma's name was Betty, it was not short for Elizabeth, it was just Betty. Some of my cousins still think her full name was Elizabeth. 

sarahufl

My sister once dated a guy named Chris. Not Christopher, Chris.

People called him Christopher ALL THE TIME and he hated it.