Queen Elizabeth The Queen Mother

The Queen refused help while planting a tree when she visited the National Institute of Agricultural Botany in Cambridge to celebrate its centenary. The 93-year-old planted the tree to mark the occasion. She also viewed an exhibition celebrating 100 years of crop research and toured the glasshouse as well.

It's an eighth great-grandchild for the Queen.

While the world waits for the Duke and Duchess of Sussex’s first baby, we’re looking back at royal births from the Queen to Prince Louis. Traditions have changed a lot over the years, from home births watched by the Home Secretary, to a special wing in a London hospital.

The pictures go back to Queen Victoria's reign.