The very final royal wedding preparations are under way with Kate Middleton and Prince William's families both taking care of last-minute duties. The princess-to-be's sister, Pippa, and her mom, Carole, were spotted leaving their Berkshire home today just after Kate Middleton herself got behind the wheel to head into Central London. She's spending the night before her big day at the Goring Hotel and will kick off the festivities on Friday morning with her close family including her brother and father, who were recently fitted for their suits. Meanwhile, Queen Elizabeth II made an appearance at St. John's College in Cambridge, where she was greeted by thousands of people lining the streets. The crowds will be in the millions for Friday's nuptials between William and Kate, and we'll be live-streaming the royal wedding here on PopSugar, so make sure to check back in for all the latest!