Charles Spencer shared a rare photo of his sister Princess Diana on his first day of school, on Thursday.
Earl Spencer shared the photo dating back to September 1968 on Instagram on the occasion of the release of his new memoir A Very Private School.
The brother and sister were pictured in matching red blazers which carried the school’s logo and knee-high grey socks.
He said that he and Diana attended Silfield, in King’s Lynn, Norfolk.
Earl Spencer wrote: “My first day of school, in September 1968: my father took this photograph of me and my sister, Diana, just before he drove us to Silfield, a really lovely primary school in King’s Lynn, Norfolk.
“The headmistress was Miss Jean Lowe, a warm and thoughtful lady who loved her boys and girls. I was there till 1972, when I headed off to the place I call - in my memoir - A Very Private School.”