Princess Charlotte looks so grown-up at 11! 🌼 Prince William and Princess Kate celebrated their daughter with a beautiful photo taken during their recent family vacation in Cornwall. "Wishing Charlotte a very happy 11th birthday!" they wrote 🎉 🎂 🎈 #princesscharlotte #princewilliam #katemiddleton #royalfamily 📸: mattporteous / theprinceandprincessofwales