This wedding will get the royal treatment.

For the newly engaged Prince Harry and Meghan Markle, marital bliss will begin with one of the most expensive weddings of all time. The forthcoming royal wedding will likely cost upwards of $30 million, according to the New York Daily News. And AOL reports that the majority of funds will go towards security for the royal nuptials.

It’s still uncertain whether the May 2018 celebration will be deemed a bank holiday, but one thing that has been confirmed is that the royal family will cover the cost for the key parts of the wedding, including the St. George’s Chapel wedding ceremony, flowers, decorations and the Windsor Castle reception.

Even for the non-royal among us, weddings are pricey: According to The Knot 2016 Real Weddings Study, the average cost of a wedding in the US last year was $35,329, up more than $2,500 from the previous year.

But how will Harry and Meghan’s regal extravaganza stack up against other famed weddings? Here’s a look at five of the most expensive weddings of all time.

Prince Charles and Lady Diana
When adjusted for inflation, Charles and Diana take the cake for the most lavish wedding in history with a $110 million price tag, according to Business Insider. While Diana’s $13,000 David and Elizabeth Emanuel dress cost more than some people’s entire budget, it was the price of security and crowd control (about $70 million in today’s dollars) that put their wedding, which was honored as a bank holiday, over the top.

Diana, Princess of Wales and Prince Charles ride in a carriage after their wedding at St. Paul’s Cathedral July 29, 1981 in London, England. (Photo by Anwar Hussein/WireImage)

Vanisha Mittal and Amit Bhatia
The daughter of Indian billionaire steel-magnate Lakshmi Mittal spent roughly $60 million sending her 1,000 wedding guests invitations in silver boxes and covering the cost of private jets, five-star hotels, dinners, parties and more for the weeklong Parisian fête. Multiple landmarks like the Palace of Versailles and the Jardin des Tuileries served as venues for the union, and the couple hired Kylie Minogue and Bollywood stars to provide entertainment.

An aerial view of the life-size castle built for Vanisha Mittal’s fairytale wedding in France. (Photo by Bruno Bachelet/Paris Match via Getty Images)

Prince William and Kate Middleton
The April 2014 wedding of the Duke and Duchess of Cambridge reportedly cost close to $34 million—$32 million of which went towards security. Kate’s one-of-a-kind Alexander McQueen gown was rumored to have cost $434,000 to make, according to Good Housekeeping, and the couple’s elaborate wedding cakes rang in at $80,000—or $134 per slice for 600 guests.

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge on the balcony at Buckingham Palace, following their wedding at Westminster Abbey on April 29, 2011 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

Sheikh Mohammed bin Rashid Al Maktoum and Princess Salama
Roughly 20,000 guests attended the 1981 wedding of the Vice President and Prime Minister of the United Arab Emirates. The nuptials cost an estimated $100 million, according to CBS News. That’s thanks to things like a stadium built by the groom’s parents especially for the celebration, and having guests flown in on private jets for the 5-day long event, which included a public flying display by the Police Air Force Wing and camel races.

Kim Kardashian and Kris Humphries
Though their marriage only lasted 72 days, the cost of their wedding will always remain impressive. According to The Hollywood Reporter, Kim wore a $2.5 million Lorraine Schwartz head piece down the aisle, spent $10,000 on crystal-encrusted wedding invitations and coughed up $150,000 for hair and makeup. In total, the 400-person Montecito, California event cost about $10 million and included a live performance by Robin Thicke. And because of Kim’s impressive social media influence, many vendors were rumored to have gifted goods and services for the televised affair.

Kim Kardashian and her bridesmaids at her 2011 wedding to Kris Humphries. (Photo by Michael Simon)