Adele wrote a letter to Sir Elton John to apologise for missing his wedding on Sunday (21Dec14).
The Rolling in Deep star said sorry for her absence after missing the nuptials, during which the music legend and his long-term partner David Furnish upgraded their civil partnership to a marriage following recent law changes in the U.K. which legalised same-sex unions.
Signing the letter from herself, her partner Simon Konecki and their son Angelo, she wrote, "Biggest congratulations my loves. Have a wonderful day. I'm sorry we are not there. See you in 2015. Love Adele, Simon and Angelo. x."
Other stars who attended the ceremony include Hugh Grant, Ed Sheeran, comedian David Walliams, singer Lulu and Victoria and David Beckham.