It's an introduction of royal proportions.

Prince Harry and Duchess Meghan have named their new son Archie Harrison Mountbatten-Windsor, they announced on their official Instagram page Wednesday.

Included in that post was a photo of the Duke and Duchess of Sussex introducing the baby to his great-grandparents, Queen Elizabeth II and Prince Philip.

"This afternoon Their Royal Highnesses introduced Her Majesty The Queen to her eighth great-grandchild at Windsor Castle," reads the Instagram photo's caption. "The Duke of Edinburgh and The Duchess' mother were also present for this special occasion."

The announcement came several hours after the royal couple took several glamorous photos with the baby boy on Wednesday.

The photos show the Duke and Duchess of Sussex standing inside the regal St. George's Hall in Windsor Castle. Harry is holding his son, who is swaddled in a white blanket, as the former Meghan Markle stands alongside him with a big smile.

Some photos provide a glimpse of Archie's face as he appears to sleep.

Archie, who was born early Monday morning, is seventh in line to the English throne.

It's the first child for Harry and Meghan. The baby's birth comes a few weeks short of his parents' one-year anniversary. Harry, 34, and Meghan, 37, married on May 19, 2018.

Meghan described the baby to reporters on Wednesday as a "dream."

"He has the sweetest temperament," she said. "He's really calm."