Emma Corrin’s Princess Diana dons a swimsuit as she splashes in the pool

Emma Corrin showed the lighter side to Princess Diana in new stills from the upcoming series of The Crown as she played with her two young sons in the pool.

While much of season four will depict her difficult marriage to Prince Charles as well as her bulimia battle, her role as a dedicated mother with also be portrayed.

In images from the upcoming series Emma splashes around in a pool with her sons Prince William and Prince Harry [Lucas Barber Grant, nine, and Arran Tinker, six].

The princess dashes around the garden of their Gloucestershire home, Highgrove, wearing a green and black swimsuit as she chases her boys with a water gun.

In the Crown Prince Charles will watch from the sidelines, however in the official snaps Charles was far more involved in the family day and joined them in the pool.

The Sun reports that Emma, 24, said: ‘There were quite a few intense scenes between myself and Josh throughout this season, so to be able to portray Diana as a mother, and the family in happy times, was wonderful.’