Princess Eugenie and Jack Brooksbank introduce their son to the world

Princess Eugenie and Jack Brooksbank have introduced their son to the world in a series of photos shared to social media.

Queen Elizabeth and Prince Philip's granddaughter also revealed a sweet tribute to the newborn's great-grandfather in the baby boy's name.

"We wanted to introduce you to August Philip Hawke Brooksbank," the royal wrote alongside images showing her son's face for the first time. August is Her Majesty and the Duke of Edinburgh's ninth great-grandchild.

The name also be a nod to Queen Victoria's husband Prince Albert, whose full name was Franz Albert August Karl Emanuel.

Princess Eugenie, 30, later explained the newborn's name further in an Instagram Story.

"On his grandfather's birthday weekend, thinking of my grandfather, we are introducing our little boy," she said, referencing Prince Andrew's birthday yesterday and Prince Philip currently being in hospital.

"He is named after his great grandfather and both of his x5 grandfathers."

The announcement of August's name, without any sort of prefix, suggests he does not have a royal title.

Regardless, the tiny tot for now is 11th in the line of succession to the British throne, behind his mother Eugenie, who is 10th. This will be bumped down the line after Baby Sussex is born later this year.

RELATED: Everything we know so far about Baby Brooksbank

The daughter of Prince Andrew and Sarah Ferguson, Duchess of York thanked well-wishers in the original post before revealing the family photos were taken by their "wonderful midwife".

"⁣Thank you for so many wonderful messages. Our hearts are full of love for this little human, words can't express. We are excited to be able to share these photos with you.⁣⁣"

"Thank you to the wonderful essential workers including our midwife who came to discharge our boy."

The Duchess of York also shared the same three images on her social media, commenting for the first time on the new arrival.

"As Grandparents, The Duke and I are thrilled and blessed at the arrival of our grandson August Philip Hawke Brooksbank," Fergie wrote.

"He is a beautiful blessing and a bringer of such love and joy to all our Family. I am so proud of Jack and Eugenie, they are and will be wonderful parents."

Princess Eugenie gave birth to the couple's first child on February 9 at 08.55am (7.55pm AEDT) at The Portland Hospital in central London - the same hospital the royal was born at back in 1990.

To announce the news they shared a sweet black and white photo showing the bub wrapping his tiny finger around mum's index finger, while dad tenderly clasps little one's wrist.

The new parents left hospital last Friday, February 12, and skipped the traditional baby photos on the steps of the facility in the freezing temperatures.

This is the first royal baby to make their official debut via social media.

Although, big cousin Archie - Prince Harry and Meghan Markle's son, who was also born at The Portland Hospital - did have his birth news announced on the now defunct Sussex Royal Instagram account.

While the family posed for official photos and their first interview days later, inside Windsor Castle, Archie's name was officially announced alongside a photo on social media.