9. Prince Pavlos of Greece
Prince Pavlos of Greece may have married a non-royal commoner, but she certainly wasn’t a run of the mill woman – he married ultra-rich heiress Marie-Chantal Miller, whose father had an estimated net worth of over $2 billion. She married Prince Pavlos in London, wearing a custom pearl-encrusted Valentino wedding gown, which cost over $225,000! The most indulgent part of the wedding, in our opinion? How about 100,000 flowers flown in via private jet from Ecuador for the occasion.