Surprise! Pippa MiddletonAccording to reports, she is now pregnant once again just over one year after having her second child.

Kate Middleton‘s younger sister, 38, is expecting her third baby with husband James MatthewsPeople Magazine reported June 5, using multiple sources. They are parents to a son already. ArthurA 3-month-old and a 14-month old daughter Grace.

Page Six first reported about Pippa’s pregnancy on June 4 after the author, wearing a smocked green dress, made a rare public appearance at the Platinum Party in the Park concert outside Buckingham Palace in London that evening. The outlet quoted a source as saying that Pippa and her husband are “so happy” and that she is a “natural mama.”

CelebHomes News reached out to Pippa for comments.

The concert was one of several events to celebrate Queen Elizabeth II‘s Platinum Jubilee, Pippa was joined by Matthews, 46, her brother James MiddletonHis wife, a 35-year-old woman, and he Alizée Thévenet, and parents Carole MiddletonAnd Michael Middleton.