If you've got your own gaggle of girlfriends you'd like beside you on your big day - or you simply can't stand his high-maintenance, jealous sibling - you might be stressing over whether you have to pop the question to his sister.
"It's not uncommon to include the groom's sister in the wedding party - or to see the reverse, if a bride has a brother she wants to include," says Aviva Samuels, owner of Kiss the Planner in Delray Beach, Florida. "But what I love about weddings today is that there are no hard-and-fast rules that you must follow. Today, decisions are made based on what is best for the couple - sorry, Emily Post."
One way to navigate this difficult decision is to discuss it with your fiance. But be careful. You should talk to your guy abut this only if it won't put him in a tough spot with his sibling or you, suggests Samuels. And should you decide to chuck tradition and deny his sister the chance to walk in your wedding, tread carefully when you let her know. "Remember: Some day when your sister-in-law's babies are playing with your babies, it will be easy to see how important it was to keep things sweet," says Samuels.
See More: 5 Questions to Ask Yourself When Choosing Your Bridesmaids
Let her down easy, then pick her back up with a plethora of other ways she can participate. "Maybe it's lighting a candle, doing a special reading, greeting the guests as they arrive, or escorting her mother down the aisle," Samuels suggests. "Perhaps she can bustle the bride's dress, reapply the bride's lipstick, fix up her hair between the ceremony and reception, or just be there with the ever-so-needed tissues. It really matters not what the assigned task was; it's truly about making her feel included and wanted on a day that is special to everyone, including her."
If you feel you must invite his sister to join the bridal party, make the best of the situation even if you're not thrilled about it - and remember just how important she is to the man you love. "No one says the bride has to consider her sister-in-law your new bestie, but bear in mind that his sister has known him since he wore diapers, had pimples and got his driver's license, which is a heck of a lot longer than she has," says Samuels. "Based on merely that, the bride should provide the same warm welcome as she gives to the rest of the posse. Being gracious is an attractive quality, and when the groom sees his sister treated with kindness it is sure to reinforce why he chose her as his bride."