If you're planning your wedding, you might not want to cut back on the guest list. When it comes to your big day bigger could mean a bigger marriage according to a new study. ABC's Linzie Janis has... See More
If you're planning your wedding, you might not want to cut back on the guest list. When it comes to your big day bigger could mean a bigger marriage according to a new study. ABC's Linzie Janis has more. Reporter: Ah, the tress of planning a wedding. It's enough to pull your big fat Greek hair out. Do we have to go in? Reporter: But even if a large formal walk down the aisle ends in a bride war, you may still be on the path to marital bliss. According to a new study by the national marriage project, couples with 150 guests or more at their wedding reported having higher quality marriages than those who had smaller big days. The number of guests at one's wedding might also reflect the amount of support that the couple has for their relationship. Reporter: The study wasn't able to account for a number of factors like the wallet size of the father of the bride. Is that dollars, $1200? Reporter: Or if the weddings cost as much as a Kardashian's and some couples like "Sex and the city" big and Carrie who never made it through the front door of their wedding. I let the wedding get bigger than big. Reporter: May disagree but the authors say the more wedding witnesses, the more likely couples will commit. Just one more reason to consider adding some extra bridesmaids to the party. ? Don't you know ? Reporter: For "Good morning America," Linzie Janis, ABC news, New York.
This transcript has been automatically generated and may not be 100% accurate.