Radiant in a custom-made gown, Pippa Middleton married a wealthy financier Saturday with a party of senior royals. She and hedge fund manager James Matthews married at a church in rural England. The wedding party included her sister, Kate Middleton--also known as the Duchess of Cambridge, and Prince William. Their 3-year-old son Prince George was a page boy, and 2-year-old Princess Charlotte was a bridesmaid. Prince William and Prince Harry arrived together wearing formal suits.