Proud parents Pippa Middleton and James Matthews were seen for the first time on a field trip with their newborn son.
The new father, James, 43, was photographed shoving his six-day-old son in a stroller as they headed for a walk near his home in west London on Sunday.
The couple also brought their two dogs, a Labrador and a Cocker Spaniel, at the family outing in Chelsea, according to MailOnline.
Pippa gave birth to the baby last Monday at the Cute Wing of St. Mary's Hospital, Paddington.
He was born weighing 8 pounds and 15 oz.
"Everyone is happy and the mother and the baby are doing well," said a spokesperson for Pippa.
She said: "James and Pippa have had a baby.
"He was born on Monday, October 15 at 1.58 pm, weighing 8 lbs and 9 oz. Everyone is happy and the mother and baby are fine."
The new parents were married in May 2017 and announced that they were waiting for June 2018.
Pippa, 35, is the younger sister of the Duchess of Cambridge, Kate, who married Prince William in 2011.
She was the maid of honor of her older sister during her wedding.
In addition to being in the spotlight due to her sister, Pippa has regularly contributed to magazines and newspapers as a columnist.
She was seen entering the hospital on Monday around 10:30 am.
The birth of his son came a few hours after Prince Harry, his sister's brother-in-law, and his wife Meghan, the Duchess of Sussex, announced news that they expect a child in the spring of 2019.
The Palace of Kensington said in a statement: "The Duke and the Duchess of Cambridge are delighted with Pippa and James."
The duke and the duchess are on tour and have been attending the engagements in Sydney.