Sir Elton John and David Furnish
Sir Elton John and David Furnish got hitched the first day Britain legalized same-sex civil unions: Dec. 21, 2005. The legendary pop star and his filmmaker beau celebrated their commitment with an estimated $1.5 million bash that started with a low-key, private ceremony at Windsor's Guildhall, the very location where Prince Charles married Camilla Parker Bowles several months earlier.
A few hours later, hundreds of cars en route to the reception sat at a near standstill along the small back roads surrounding the singer's country mansion. The BBC dubbed it "a celebrity traffic jam." Guests included Victoria Beckham, Ringo Starr, Ozzy Osborne, Claudia Schiffer, Sir Michael Caine, Sting, Elvis Costello and Sarah, Duchess of York. Vintage pink champagne was served in several circus-sized heated tents, and John serenaded his partner with a special performance of "Your Song."