Estimated Cost: $3.5 million The Wedding: MGM couldn't have scripted the 2002 nuptials better. After a ceremony at New York's Marble Collegiate Church, guests (including Michael Douglas, Barbara Walters, and Diana Ross) enjoyed a reception at the Regent Wall Street Hotel that included a performance by Tony Bennett. Minnelli wore a gown designed by Bob Mackie (aka the guy who makes Cher look like, well, Cher). I'm sure its solid craftsmanship is still intact; unfortunately, the marriage isn't. The couple parted ways legally 17 months later. Most Outlandish Detail: Elizabeth Taylor served as the Maid of Honor and Michael Jackson, who reportedly moonwalked on the altar, was the Best Man.Watch TV Guide Network's Kathy Griffin's Insightful and Hilarious Take on the Royal Wedding on Friday, April 29 at 8/7c.

Estimated Cost: $800,000 The Wedding: The 1999 wedding took place at a castle outside of Dublin. Guests — including, of course, Ginger, Sporty, and Scary — were asked to wear either black or white. The couple sat on golden thrones at the altar, with their 4-month-old son Brooklyn at their side... in a crib. Most Outlandish Detail: The wedding cake featured nude figures of the bride and groom.

Estimated Cost: $2 million The Wedding:TomKat's lavish 2006 nuptials took place in an Italian castle (Odescalchi Castle in Bracciano, if you're wondering). The Scientology ceremony was attended by their A-list buds, including Will Smith and Jada Pinkett Smith, and David and Victoria Beckham, who watched Holmes walk down the aisle in a Giorgio Armani gown and feasted on a five-tiered white chocolate wedding cake. What's priceless? Most Outlandish Detail: Cruise serenaded his new bride with "You've Lost That Loving Feeling," Top Gun-style.

Estimated Cost: $2 million The Wedding: Aguilera exchanged vows with Bratman, a music executive, in Napa Valley in 2005 while donning a $30,000 Christian Lacroix gown. The couple split in 2010. Most Outlandish Detail: Christina carried a diamond rosary priced at $10,000.

Estimated Cost: $1.5 million The Wedding: More than 500 guests, including Bruce Willis and Demi Moore, Quincy Jones, Bill Murray and Queen Latifah, dined on wreaths of lobster in 1993 in the Grand Ballroom of New York's Plaza Hotel, which had been transformed into a garden paradise with white satin, pink rose trees, orchids, lilacs, gardenias, and tulips. (Sadly, their romance wilted when the couple divorced in 2006.)Most Outlandish Detail: The soundtrack to the couple's first dance: No, not "Party All the Time," though it was another Eddie Murphy original, a song he wrote for his bride called "Cuteness."

Estimated Cost: $2.5 million The Wedding: Hurley and Nayar had two distinct ceremonies in 2007, separated by an activity-packed week. The first was an Anglican service at a castle in England. Then, the couple traveled to Jodhpur, India, Nayar's hometown, for a traditional Hindu ceremony. (No amount of flower petals could bless this union though; the couple divorced in 2009.) Most Outlandish Detail: One guest described the rain shower at the Indian ceremony as "a blessing from heaven.

Estimated Cost: $1.5 million The Wedding: The pop star wed his longtime partner at The Windsor Guildhall in December 2005, almost immediately after civil unions were legalized in Great Britain. The pair exchanged diamond wedding bands, and later, John fittingly sang "Your Song" to Furnish. Most Outlandish Detail: More than 600 guests drank vintage pink champagne at the reception at John's mansion.

Estimated Cost: $1 million The Wedding: The then-It couple wed in Malibu in 2000 before 200 guests — including the Friends cast, save for Matt LeBlanc — and doled out $100,000 for security alone. Aniston's Lawrence Steele gown cost $50,000. They split in 2005. Most Outlandish Detail: The affair closed with a fireworks display. Watch TV Guide Network's Kathy Griffin's Insightful and Hilarious Take on the Royal Wedding on Friday, April 29 at 8/7c.

Estimated Cost: $1 million The Wedding: The Celebrity Apprentice star said "I do" for the fourth time in January 2005 at the Bethesda by the Sea Episcopalian Church in Palm Beach. The reception, which featured a 36-piece orchestra and the food of chef Jean-Georges Vongerichten, was attended by more than 400 guests, including former New York Mayor Rudy Giuliani, Regis Philbin and Barbara Walters. Most Outlandish Detail: Melania wore a Christian Dior gown that was beaded with 1,500 crystals and featured a 13-foot train. The gown weighed close to 50 pounds.

Estimated Cost: $1.5 million The Wedding: Douglas and Zeta-Jones wed in 2000 in a ceremony at the Plaza Hotel that included $100,000 on Godiva chocolates. Zeta-Jones wore a $140,000 Christian Lacroix gown. Most Outlandish Detail: Catherine accessorized with $300,000 worth of Fred Leighton jewelry.

Estimated Cost: $3 million The Wedding: The former Beatle wed Mills at Ireland's St. Salvador's Church in June 2002 before guests including fellow musicians Ringo Starr, Eric Claption and Elton John. Mills wore a lace gown that she designed with Eavis & Brown of London. Heather walked down the aisle to "Heather," a song McCartney had written for his bride. The pair did not sign a prenuptial agreement and split in 2008 after a lengthy legal battle. Most Outlandish Detail: The reception was an Indian-themed party that featured authentically dressed dancers and a vegetarian menu.

Estimated Cost: $250,000 The Wedding: For the Aussies' 2006 Down Under affair, Nicole wore a $20,000 Balenciaga gown. Guests included Nicole's BFF Naomi Watts, Russell Crowe and Hugh Jackman. Most Outlandish Detail: The happy couple spent $80,500 on Tiffany clock party favors.

Estimated Cost: $500,000 The Wedding: The songstress wed her mentor in 1993 at New York's St. Thomas Episcopal Church before 300 guests, including Bruce Springsteen, Barbra Streisand and Billy Joel. The couple split in 1996 and divorced two years later. Most Outlandish Detail: Carey's Vera Wang gown — complete with a 27-foot-long train — cost $25,000.

Estimated Cost: $1.5 million The Wedding: The pop icon and filmmaker tied the knot in Scotland's Skibo Castle in December 2000. They rented every room at the castle for their guests, including Gwyneth Paltrow, Rupert Everett and Sting. While Ritchie wore a kilt, Madonna wore an $80,000 silk gown by Stella McCartney. The couple divorced in 2008. Most Outlandish Detail: Madonna's accessories included a tiara previously worn by Princess Grace of Monaco and a 37-carat diamond cross necklace designed by Harry Winston.

Estimated Cost: $1.5 million The Wedding: This couple's July 2007 wedding capped a week in Saint Tropez that included a helicopter ride and a trip to both Disneyland Paris and City Hall to make the marriage official. The ceremony was held at Paris' Saint Germain L'Auxerrois Church before 250 guests, including most of Longoria's Desperate Housewives co-stars, Jessica Alba and Mario Lopez. But the real party took place after the wedding at the 17th-century Chateau of Vaux le Vicomte. The red-themed reception featured tens of thousands of roses, and a five-tiered, raspberry-filled wedding cake flown in from California. Most Outlandish Detail: Although they cut the wedding cake at midnight, the dancing and revelry reportedly didn't end until 6:30 in the morning.

Estimated Cost: Unknown The Wedding: The reality starlet and Good Charlotte rocker were married by rapper-minister Rev. Run at Lionel Richie's Beverly Hills estate before 130 family members and friends, including Gwen Stefani, Samantha Ronson, Khloe Kardashian and Joel's twin brother Benji. Nicole wore three Marchesa dresses throughout the day, and the couple's kids even got involved: 2-year-old Harlow was the flower girl and 15-month-old Sparrow was the ring bearer. Most Outlandish Detail: The ceremony featured a live elephant. Watch TV Guide Network's Kathy Griffin's Insightful and Hilarious Take on the Royal Wedding on Friday, April 29 at 8/7c.