Hayek and Pinault originally were married in a small civil ceremony in Paris last Valentine's Day.
This time, the couple made it a weekend-long celebration, starting with a cocktail party at Punta della Dogana, an art museum owned by the groom's father, Francois Pinault.
Among those attending were actresses Charlize Theron, Penelope Cruz and Ashley Judd, plus U2 frontman Bono and Vogue editor Anna Wintour, as well as former French President Jacques Chirac.
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