PRINCESS Charlotte’s adorable birthday message featured a sweet hidden nod to the late Queen.
Charlotte beamed from ear to ear as she posed in a garden wearing a floral blouse paired with a denim skirt, navy jumper and red cardigan.
Her mother, Princess Kate, took the adorable photo to celebrate young Charlotte’s ninth birthday.
The photograph was taken in the gardens of the Windsor Estate in Berkshire.
But eagle-eyed viewers may have spotted something important in the background of the sweet snap.
Charlotte is pictured leaning on a garden fence with pink flowers blossoming beside her.
These flowers are are Clematis Elizabeth, which Gardens Illustrated reported is one of the first plants named after Queen Elizabeth II.
Known to bloom in late …