Home » Royalty » British Royal Family Princess Charlotte’s cheeky response when anyone asks her age > The Duke of Cambridge shared an insight into how he and wife Kate celebrated their daughter’s sixth birthday on 2 May The Duke of Cambridge has admitted that his daughter, Princess Charlotte, is growing up fast and revealed her hilarious response when anyone who asks her age. The Princess celebrated her sixth birthday on Sunday and during an engagement in the West Midlands on Tuesday, dad William was heard joking in a video shared by MailOnline: “If you ask her, she says she’s 16.” He added: “Charlotte says, ‘I’m six now, I’ll do what I do want.’ They grow up very fast.” The Duke also shared an insight into how the family marked the special occasion at their Norfolk home, Anmer Hall, during his visit to Babcock Vehicle Engineering firm in Walsall. William, 38, was talking to Jenna Jackson, the company’s lead HR business partner and a mother-of-two, who asked him if Charlotte had enjoyed her birthday. While the Cambridges were marking the day in private, William and his wife Kate followed tradition by sharing a new birthday portrait of their daughter with the public. In the photo, taken by the Duchess, Charlotte was pictured in a floral dress by one of Kate’s go-to childrenswear designers, Rachel Riley. The royals usually share official images on their Twitter and Instagram accounts, but last weekend William took part in a social media boycott in a stand against racism and abuse online. Taking to Twitter, the future King explained: “As President of the FA I join the entire football community in the social media boycott this weekend. W.” Charlotte’s birthday portrait was therefore not shared on their platforms.