Actress Keira Knightley wanted to keep her wedding date so secretive that she didn't even share the exact ceremony date with her in-laws.
Like other guests, her husband's parents were also told that they were throwing a party to celebrate their plans to get married.
"We were only told to turn up the night before," thesun.co.uk quoted her husband James Righton's dad Nicholas.
The two got married on Saturday in southern France.