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14. Salma Hayek and Francois Henri Pinault - 2009

Estimated Cos: $3.5 million

What happens when you marry a billionaire? You have a $3.5 million wedding. They tied the knot at Le Fenice Theatre in Venice, Italy and it was certainly a star-studded affair with guests like Charlize Theron and Penelope Cruz. Food was cooked by famed chef Jose Andres and Bono performed.

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