Their weddings are also pretty luxurious affairs, so what do they do after "I do" when they want to get away from it all?
They jet off for an extravagant honeymoon, of course. Click through the slideshow below to learn about seven of the most extravagant celebrity honeymoons.
Jay-Z and Beyonce
Beyonce and Jay-Z didn't go to some far-off destination for their honeymoon. Instead, they opted for a domestic paradise and stayed at the <a href="http://abcnews.go.com/Travel/slideshow/photos-celebrities-posh-resorts-10192376">Sanctuary at Camelback Mountain in Arizona.</a> While the couple has kept details of their honeymoon characteristically under wraps, the resort's website states that they offer private homes by the night, with the most expensive home, <a href="http://www.sanctuaryoncamelback.com/accommodations/privatehomes/casamontana.html">Casa Montana, going for a cool $3,500 per night</a>.
Prince Charles and Princess Diana
Princess Diana and Prince Charles opted for a Mediterranean cruise for their honeymoon. The couple sailed to <a href="http://travel.usnews.com/features/Honeymoons_of_the_Rich_and_Famous/">places like Tunisia and Egypt</a> for 11 days aboard the Royal Yacht Brittania, where they enjoyed privacy and quietness -- they reportedly <a href="http://tlc.howstuffworks.com/weddings/royal-honeymoon2.htm">banned shouting aboard the yacht</a> and asked that all crew members use hand signals or notes to communicate instructions.
Nicole Kidman and Keith Urban
Nicole Kidman and Keith Urban's honeymoon landed them in Bora Bora, paying a reported <a href="http://blog.sfgate.com/dailydish/2006/06/27/kidman-and-urban-honeymoon-in-bora-bora/">$15,000 per night</a> at the St. Regis resort. The couple flew in via private jet, where customs officers checked their passports while the couple waited on the plane. The U.S. Royal Estate -- where Kidman and Urban stayed -- includes a 24-hour butler service, in-room Jacuzzi and a private pool.
Tom Cruise and Katie Holmes
The recently divorced Tom Cruise and Katie Holmes spent part of their honeymoon on a yacht, cruising around the Maldives in the Indian Ocean. The pair flew in on a private jet and they were rumored to have <a href="http://www.foxnews.com/story/0,2933,231043,00.html">dined at an underwater restaurant</a> during their stay. Cruise and Holmes brought daughter Suri along -- with <a href="http://www.people.com/people/article/0,,1073518_1561769,00.html">"40 pieces of luggage and lots of toys"</a>.
Prince William and Kate Middleton
Nothing says royalty like spending a 10-day honeymoon on a privately-owned island. The Duke and Duchess of Cambridge shelled out a reported <a href="http://www.telegraph.co.uk/news/uknews/royal-wedding/8505248/Royal-wedding-William-and-Kates-Seychelles-honeymoon-hideaway.html">$5,000 a night</a> to stay on a <a href="http://www.mirror.co.uk/news/uk-news/royal-wedding-prince-william-and-kate-128775">private island in the Seychelles in the Indian Ocean</a>. <em>The Telegraph</em> reported that the couple had a personal chef and a butler for the duration of their stay. The royal couple thought they had found the ultimate private island, after <a href="http://www.usmagazine.com/celebrity-style/news/william-and-kates-720000-honeymoon-new-details-2011185">renting out 11 villas for an estimated $720,000</a> -- until <a href="http://www.celebuzz.com/2012-07-10/prince-william-and-kate-middletons-honeymoon-photos-released-palace-outraged/">honeymoon photos of the pair</a> emerged a year after their getaway.
Tiger Woods and Elin Nordegren
The now-divorced Tiger Woods and Elin Nordegren went straight from their wedding at the Sandy Lane Resort in Barbados into their honeymoon aboard <em>The Privacy</em>, the yacht Woods gave Nordegren as a wedding gift. Woods reportedly dropped $57 million on the honeymoon.
Carrie Underwood and Mike Fisher
Carrie Underwood and Mike Fisher jetted from Georgia to Tahiti for their romantic honeymoon at the Le Taha'a Resort. They stayed in a over-water suite, which go for <a href="http://www.eonline.com/news/190395/carrie-underwood-s-honeymoon-heat">$2,000 per night</a>, and enjoyed <a href="http://www.people.com/people/article/0,,20402877,00.html">snorkeling</a>, as well as a helicopter tour of the island.