10. Brad Pitt and Jennifer Aniston - 2000
Estimated Cost: $1 million
Back in the '90s, you had to try really hard to plan a $1 million wedding and Brad and Jen did just that when they said "I do" in Malibu in July 2000. They had 50,000 flowers brought in for a "zen garden" look and also had fireworks and a gospel choir. Melissa Etheridge also performed.