Arthur Michael William Matthews is the first child of Kate Middleton's sister.
Pippa Middleton was photographed again in the company of her newborn son.
This Thursday, the 14th, Kate Middleton's sister was spotted in London as she pushed the boy's stroller for only a month.
Stylish, Pippa introduced herself at the time with a white dress and a light blue overcoat.
Check below the images of the moment: