Date: Nov. 18, 2006
Cost: Celebrity wedding planners told People the wedding probably cost around $3.5 million.
Location: Odescalchi Castle in Lake Bracciano, Italy
Special touches: During the Scientology ceremony, the duo exchanged platinum-and-diamond Cartier Dia Eternity bands. At the reception, the guests feasted on sea bass, drank 300 bottles of red wine and champagne, and enjoyed a five-tiered cake filled with white chocolate mousse and decorated with marzipan roses. The couple recently celebrated their five-year anniversary.