British monarch Queen Elizabeth II and her husband the DUKE OF EDINBURGH celebrated their diamond wedding anniversary on Monday (19Nov07) with a rousing Thanksgiving service in London's Westminster Abbey - the church where they married 60 years ago. The traditional ceremony came a day before the couple's wedding anniversary on Tuesday (20Nov07) - a day they will mark with a trip to Malta. The Queen - the first British monarch to celebrate six decades of marriage on the throne - wore a white suit alongside her black-clad consort for the service attended by a 2,000-strong congregation. Among the guests in attendance was British Prime Minister Gordon Brown.