Is unnecessary luxury immoral? Amazon boss Jeff Bezos and Lauren Sánchez’s wedding in Venice is likely to be one of the most expensive ever.
Glitz, glamour and a billionaire groom
Happy couple: Amazon boss Jeff Bezos is marrying journalist Lauren Sanchez just two months after she flew to space in his Blue Origin rocket. Glossary
Engagement - When two people have agreed to get married.
Jeff Bezos - The founder of Amazon and one of the world's richest people.
Leonardo DiCaprio - An American actor and film producer born in 1974, perhaps best known for starring in Titanic.
Bill Gates - Founder and former CEO of Microsoft, the company responsible for popularising household computers in the 80s (and still one of the major global tech companies). His house on the shores of Lake Washington is called Xanadu 2.0. It took seven years to build and is seen as an early example of a smart home.
Jordan - A country that exists today in the Middle East.
Mick Jagger - An English rock star born in 1943.
Tax - Money workers pay to the government to pay for services like roads and hospitals.
Claim - A statement made without clear proof.
Charity - An organisation that helps people in need. It does not make money as a business does. Most people who work for charities are volunteers. This means they are not paid.