Kate Middleton's younger brother James shares the story about how he found out that Prince William had proposed to her in 2010, and what he thought about the future king marrying his sister.

Carole Middleton lives closest to her son James, despite Princess Kate and Pippa Matthews' Berkshire move. James Middleton, 37, and his wife, Alizee Thevenet, live with their one-year-old son in the Berkshire countryside.

The Prince of Wales had to meet one particular prerequisite before marrying Princess Kate, according to her brother.