Pippa Middleton Welcomes First Child With Husband James Matthews The sister of Kate Middleton, <br />the Duchess of Cambridge, <br />has given birth to a boy. The baby was born on Monday afternoon weighing<br />8 pounds and <br />9 ounces. Pippa announced her pregnancy in June in her fitness column for<br />'Waitrose Weekend' magazine. A Kensington Palace spokesman says <br />Prince William and Kate are "thrilled" for <br />the couple. The arrival comes just a day after Prince Harry and Meghan Markle revealed they are <br />expecting a baby. Middleton and her husband were married in May last year in a ceremony attended by royals <br />and celebrities.