Lady Louise was born on November 8, 2003, at Frimley Park Hospital.
She is currently 13th in line to the throne behind her younger brother James, Viscount Severn.
Last year the Wessex family celebrated Lady Louise’s 16th birthday privately.
However, for her 15th birthday in 2018, the Countess of Wessex took her daughter on a special night out to watch Strictly Come Dancing.
