The Princess of Wales and Princess Charlene of Monaco twinned in fitted dresses for an uber-rare moment together at a pre-luncheon reception for sovereign monarchs and guests in celebration of Queen Elizabeth’s Diamond Jubilee at Windsor Castle in 2012 The Princess of Wales and Princess Charlene of Monaco twinned in fitted dresses for an uber-rare moment together at a pre-luncheon reception for sovereign monarchs and guests in celebration of Queen Elizabeth’s Diamond Jubilee at Windsor Castle in 2012