10. Charlene Wittstock, 2011
In 2011, Charlene married Prince Albert II of Monaco in a memorable off-the-shoulder Armani Prive gown. It was reported that the royal couple's nuptials cost a cool $55 million for the three-day celebration. The couture dress featured delicate flower embroidery, 40,000 Swarovski crystals, and a classic veil. Oh, did we also mention Wittstock's dress had a 16-foot train that took 100 hours to make? For the special day, the princess wore her hair up in a classic bun adorned with silver accessories.