Photo: Kristyn Hogan

When it comes to your wedding, you and your fiancé call the shots. But if your friend is in the midst of planning her wedding, too, you have to follow her wishes when it comes to her big day. That means, you may not agree with every wedding-planning decision she makes, but you shouldn't start going tit for tat. Case in point: What if you give her a plus-one, but she doesn't offer you one for your fiancé? An etiquette expert weighs in below.

Traditionally, you're supposed to extend plus-ones to someone who is engaged, but sometimes a bride and groom choose not to. There are countless reasons why your friend might not have given you a plus-one to her wedding, but whatever the reason, you have to abide by her rules. It is their day, after all. Whatever you do, don't be too hard on your friend. More than likely, your friend had a strict wedding budget.

This article was written by Mira Milla for Brides.com.