Some royal fans have become outraged over the way that The Duke & Duchess of Sussex wished their nephew, and the future King of England, a happy sixth birthday.
Underneath one of the snaps, Prince Harry and Meghan Markle commented a happy birthday wish - but many fans were quick to criticize the message.
"Happy birthday," the couple wrote underneath the pic. "Wishing you a very special day and lots of love!"
However, some social media users were upset that the Duke and Duchess of Sussex didn't refer to their nephew by his name and title.
"He is the future KING. Treat him with respect," one commenter wrote. "He is HRH!!!!!!!!!"
"He is HRH Prince George to you!!!!" another wrote. "Don't forget to mention!"
Some followers even pointed out that other royal social media accounts, including Clarence House's and The Royal Family's, included "Prince George" in their messages.
"When all the royal accounts have [used] a 'prince' except yours…so there is really something," another critic commented.
Still, there were many followers who were quick to come to the couple's defense.
"They are his uncle and aunt," wrote one commenter. "No need to write his title. Being sincere is more important."
"Stop nitpicking [and] relax," added another. "You just want to find fault where there is none. Family is family and how they address each other in public or private is none of your concern."