Educated at Woldingham and then Stowe School, she went on to graduate from the University of Bristol with a degree in the History of Art.
In July 2013, she married Henry Edward Hugh St George, grandson of the Marchese di San Giorgio and maternal grandson of the 11th Duke of Grafton.
In March 2014, it was revealed that the couple were expecting their first child later that year.
Their daughter, Iris Lara St George, was born on 22 July 2014.
Brudenell-Bruce starred as Sydney in Robocroc via Syfy movie.