Princess Beatrice and Princess Eugenie dressed in their wedding finery this afternoon to watch as their first cousin Zara Phillips married rugby player Mike Tindall. Beatrice brought along her boyfriend, Dave Clark, who joined the girls, Kate Middleton, and Prince William for cocktails yesterday on the royal yacht Britannia. It's the second royal nuptials of the year for Eugenie and Beatrice following William and Kate's April 29 vows. Once again, their mother, Sarah Ferguson, was not on the invite list. They did arrive, though, with their dad, Prince Andrew, whose sister, Princess Anne, played mother-of-the-bride today with Zara.