Who is Isabelle de la Bruyère? The internationally acclaimed art expert who is 'getting serious' with Princess Margaret's son David Armstrong-Jones, the Earl of Snowdon
The 2nd Earl of Snowdon is the son of Princess Margaret and Antony Armstrong-Jones, and one of King Charles' closest cousins, but who is his partner, the doyenne of the art world, Isabelle de La Bruyère?