Kensington Palace via Getty Images

First came love, then came a royal wedding at Buckingham Palace, then came a baby prince and now comes their own joint royal coat of arms.

That is how the fairy tale continues to play out for the Duke and Duchess of Cambridge, William and Kate, who today revealed their matching heraldry.

Kate Middleton's First Red Carpet Outing Since Becoming a Mom

Kensington Palace announced that Prince William and Kate, both 31, who welcomed their first child, George, in July, have a new Conjugal Coat of Arms which will, "represent them in heraldic terms as a married couple."

Photos of Radiant Kate Showing Off Royal Baby Boy

The couple's Conjugal Arms, which got the queen's approval earlier this year, shows William's shield side by side with his wife's, following the traditional format.

William's shield, on the left, is his version of the Royal Coat of Arms, which was granted to him on his 18 th birthday, according to the palace. The shield shows the Royal emblems of England, Scotland and Ireland surrounded by a blue garter to symbolize William's title of Knight Companion in the Order of the Garter.

Read About Prince William's Career Change

Kate's shield, on the right, comes from her family's Coat of Arms, granted to her father, Michael Middleton, ahead of her 2011 wedding to William. Kate's shield is surrounded by a Wreath of Oak, to balance out the Duke's garter, a traditional placement for royal spouses who do not come from royal lineage, according to the palace.

The new Conjugal Arms also upholds the legacy of William's maternal side of the family by including a red escallop shell derived from the Spencer Coat of Arms, the arms used by ancestors of William's late mother, Princess Diana of Wales, for centuries, according to the palace.

Prince William Talks Baby George, Wildlife Conservation

While Kate and William now have their joint Coat of Arms, more than two years after they wed, they will still keep their own, individual Coats of Arms. The duchess, Kate, received hers only after she wed Prince William, as granted by the queen.

The royal couple will no doubt have room to display their new Coat of Arms in their bigger digs. After Kate gave birth Prince George in July, and Prince William announced an end to his military service this month, the family of three is expected to move this fall into their newly renovated apartment 1A of Kensington Palace, where William grew up.