But with married couples still accounting for 70pc of all families here, they're not the only ones saying 'I Do' to tradition.
Despite the rise of cohabitation, there are 144,000 more married couples in Ireland than there were five years ago, according to the latest census figures.
In fact, marriage is now so popular that Kate Winslet has just done it for the third time at 37.
So from coloured frocks to virtual wedding guests, here we look at some of the top wedding trends for 2013.
From The Great Gatsby to Downton Abbey, the roaring '20s is back with a bang for your big day. In contrast to last year's shabby chic aesthetic, this year it's all about elegance – think vintage gowns, birdcage veils and costume jewellery.
Move over Angelina – the thigh-high slit is just one of the catwalk trends set to turn up on altars across the country this year. Forget frumpy pastel horrors – bridesmaids here will be giving bride-to-be Angie a run for her money in all the latest designer trends.
Other sexy new styles for ladies in waiting include illusion necklines – sheer fabric that gives the illusion of a high neckline.
You've got mail! Research shows there's been a 25pc jump in the number of couples using the net to plan their nuptials in the past two years. And top of the list is a personalised wedding website – aka 'wedsite' – detailing everything from directions to dress code.
Email 'save the dates', invites and RSVPs are just some of the other ways soon-to-be-weds are saving on stamps. Meanwhile, almost a third of those who got hitched last year sourced at least some of their suppliers through Twitter and Facebook.
BRIDAL NAIL ART
Hair and make-up aren't the only things brides have to worry about on their wedding morning. Now their nails are expected to look picture perfect too.
From floral to lace, nail art – as seen on the paws of engaged stars including Miley Cyrus and Cher Lloyd – is big for brides in 2013. If arty talons aren't your thing, mint and metallics are among the hottest nail polish hues instead.
Still fancy jetting off somewhere more tropical? With the average Irish couple spending over €5,000 on their honeymoon, increasing numbers are asking their guests to chip in. Known as a "honeyfund" Stateside, cash gift registries are reportedly on the rise here too.
Rather than stuffing cash into a card, guests transfer money into a PayPal account for the happy couple. Given that half of affianced couples say they'd rather receive cash or gift vouchers than gifts, it certainly beats yet another toaster.
THE AFTER PARTY
Sleep is for lightweights! Weddings could soon go on for up to a day if the latest 'after party' trend takes off. More and more couples are choosing to keep the party going after the official wedding reception has ended.
Usually involving a change of entertainment and ever-popular food trucks, the idea is to keep everyone from grandma to the groomsmen happy without the expense of a separate party.
NOT FORGETTING THE GROOM . . .
This year sees the rise of the 'Groomzilla'. Groom's cakes, rings and gifts are just some of the ways guys are getting more involved in their big day.
While a 'Groom's Lounge' – a wedding reception area featuring scotch and cigar stations – is sure to keep male guests smiling. When it comes to groomswear, Pee-wee Herman-style bow ties and pocket squares will be all the rage.