Catherine Zeta-Jones & Michael Douglas – Estimated $1.5 Million

Actress Catherine Zeta-Jones is the second wife of Michael Douglas, and it looks like he was willing to go big or go home for his second try at walking down the aisle. He never told her the exact cost of their big day, but sources estimate it to be around $1.5-2 million.

She wore a gorgeous $140K-worth gown by Christina Lacroix, and the cherry on top was her diamond tiara worth $300K. Both Zeta-Jones and Douglas are still active actors. She most recently starred in prodigal Son, while he will return for the Ant-Man and the Wasp: Quantumania movie in 2023.

Prince Charles & Princess Diana – Estimated $135 Million

Everybody loves tuning into the Royal couples’ grand ceremonies, and Prince Charles’s special day with the late Princess Diana was indeed one for the books. Sources say their nuptials cost a whopping $135 million, and over 750 million people worldwide watched the televised ceremony.

Despite how perfect they looked that day, their marriage had many problems, and they both cheated on each other. They ended their marriage in 1996, and Princess Diana sadly died a year later. Prince Charles is now married to Camila Parker Bowels, and he will claim the throne once Queen Elizabeth II passes away.