Cameron Diaz Wedding -- The Whole Klan Showed Up

It looks like a KKK rally, but it's actually a clumsily designed shroud to protect famous bride Cameron Diaz from the paparazzi.

Multiple pics were taken by various photogs of the backyard scene. Cameron and Benji Madden didn't want their entrance captured by outsiders, so 4 people carried the contraption to the altar, with the bride safely tucked inside.

Unclear if the big reveal will be in a magazine, but we're betting that's the case.

Friendly advice ... a chuppa would have done nicely.