Wedding bells are ringing for Pippa Middleton! Kate's sister is reportedly engaged to her longtime boyfriend, financier James Matthews, People reports. On Monday, veteran royals reporter Richard Kay broke the news, revealing that James popped the question over the weekend in the Lake District of England. While Pippa has yet to confirm the news, the couple was last seen at Wimbledon earlier this month looking happy and in love. Pippa and James have been dating on and off since 2012. Take a look at even more celebrity duos we can't wait to see tie the knot.