"Wishing Archie a very happy 2nd birthday today. 🎈🎂," they wrote alongside the family photo.
Unfortunately, Archie's cousins Prince George, Princess Charlotte and Prince Louis — who live at Kensington Palace in London with William and Kate — won't be in attendance for his celebrations since Harry and Meghan are most likely celebrating their son's birthday at their Montecito mansion in California. Archie hasn't been back to the U.K. since the duo stepped back from their senior royal duties last year.
But luckily, Archie won't be the only little one running around the family's $14.65 million home for long, as the Duke and Duchess of Sussex are expecting their second child, a girl, over the summer.
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The duo first shared the joyous news in February with a stunning black-and-white photo of the prince looking lovingly at Meghan while she cradled her small baby bump. One month later, the soon-to-be parents-of-two revealed the sex of their unborn child during their tell-all interview with Oprah Winfrey.
OK! previously learned that the expecting mama is planning to give birth to the couple's little girl at their California home. While Meghan planned to have an at-home birth during her first pregnancy, "her doctors advised her to go to hospital," a source explained. She and Harry welcomed Archie at London’s private Portland Hospital in 2019.
And since Meghan is so far along in her pregnancy, she was unable to attend Prince Philip's funeral last month in the U.K. — leaving her husband alone for his reunion with the royals after the couple made bombshell claims against his family during their Oprah interview.
At the time of their sit-down with the talk show titan, Harry said he believes his dad and brother are "trapped" in royal life. The pair also accused unnamed members of the royal family of racist remarks and said the institution failed to help Meghan when she sought assistance for her mental health struggles. In addition, they cited the family's lack of support as the reason they decided to step back from their royal life.
To no one's surprise, the royals didn't take kindly to the couple's harsh words, as Harry was reportedly met with icy greetings from royal members when he touched down in the U.K. for his grandfather's funeral.