Princess Charlotte is ringing in her 11th birthday with a royally cute new portrait. Prince William and Kate Middleton posted the never-before-seen snap of the preteen to celebrate her birthday on Saturday. The image showed Charlotte in a field of flowers wearing a black and red striped sweater and denim jeans. She had her nails painted blue. “Wishing Charlotte a very happy 11th birthday! 🎂.” the Prince and Princess of Wales captioned the social media upload. Kate Middleton and Prince William shared a new photo of daughter Princess Charlotte (seen above) on her 11th birthday. princeandprincessofwales/Instagram A new portrait of the preteen (pictured above in May 2025) was released over the weekend to celebrate. princeandprincessofwales/Instagram The couple are also the parents of two sons — Prince George, 12, and Prince Louis, 8.…