Princess Charlotte celebrated her 9th birthday with a charming new portrait, shared by her parents, Kate Middleton and Prince William. The photo, taken by the Duchess of Cambridge in Windsor recently, captures Charlotte’s joy and marks her transition into her last single-digit year. This gesture by the royal couple has sparked intrigue about their departure from traditional release timings for their children’s birthday portraits. Alongside the image, which the Princess of Wales took, there is the caption, “Happy 9th Birthday, Princess Charlotte! 🎂 Thank you for all of the kind messages today. …