Sarah Ferguson celebrated her daughter Princess Beatrice's birthday on social media.

On Wednesday, Prince Andrew and Ferguson's eldest daughter turned 30 years old. The Duchess of York took to Twitter and sent her warm wishes to Princess Beatrice.

Ferguson also shared throwback photos of Princess Beatrice with her sister Princess Eugenie alongside a recent photo of the 30-year-old royal. "Happy birthday my Trixie - Belle so proud of you xx @yorkiebea," Ferguson wrote in the caption.

People also shared some of Princess Beatrice's baby photos to commemorate her birthday. The shots included a black and white photo of the Duke and Duchess of York holding their firstborn. 

There were also several pictures of Ferguson and Princess Beatrice from the 1990s. One snap featured Ferguson wrapping Princess Beatrice in her arms while they were at the Royal Windsor Horse Show. In addition, some photos showed Prince Andrew with their two daughters wearing matching ensembles while holding presents. The snap was taken in 19997 after the family attended a Christmas Day service outside the Sandringham Church.

Just recently, Princess Beatrice and Princess Eugenie received the same honor as Princess Diana and Kate Middleton when they were invited to be featured in the September issue of British Vogue.  The big difference is that they will not be on the front cover unlike the Duchess of Cambridge and late Princess of Wales.

During their interview with the publication, the royal siblings confessed that it was not easy to be a royal as they grew up in the public eyes. They also admitted that they were hurt with the constant mockery they received following the fashion blunder they committed at Prince William and Middleton's royal wedding in 2011.

"It's hard to navigate situations like these because there is no precedent, there is no protocol. We are the first: we are young women trying to build careers and have personal lives, and we're also princesses, and doing all of this in the public eye," Princess Beatrice said.

In the same interview, Princess Eugenie revealed that she got into trouble after sharing a snap of Prince Andrew on Father's Day. The next royal bride chose a snap of Prince Andrew during his debut as Colonel of the Grenadier Guards that features the corridor line. The area is supposed to be closed off to the public, so Princess Eugenie earned a "telling-off" for oversharing.