Kate Middleton's Sister Pippa Welcomes Baby Boy

Kate Middleton's younger sister, Pippa Middleton has welcomed her first child with husband James Mathews. The couple welcomed a baby boy on Monday at 1:58 p.m., local time, weighing 8 lbs. 9 oz., PEOPLE confirms.“Everyone is delighted and mother and baby are doing well,” her representative tells PEOPLE.Speaking on behalf of Pippa’s sister, Kate Middleton, and brother in law, Prince via IFTTT