Prince William and Kate Middleton rode in the back of a car together in London today. The couple were spotted leaving Westminster Abbey together after attending their final wedding rehearsal with family. Yesterday Kate had a stand-in for a walk through, but now she's reunited with William for the very last preparations. Pippa, Michael, and Carole Middleton along with Prince Harry were all on hand to take care of the last preparations for Friday's nuptials. Kate handled her own errands earlier in the day when she stopped by Clarence House to drop off a large box and a dress bag. She'll reveal her much-anticipated gown on Friday and we'll be streaming the royal wedding live on PopSugar, so check back for all the coverage!