The is a lovely picture and it reminds me of two reasons I don’t like Catherine’s new portraits - they are sterile/uninspiring and lack warmth (other than her big smile in two of them). The stories say that the pictures were meant to be in the style of Cecil Beaton’s photographs of the royals, but Beaton’s pictures are so much better.
I find Beatons work too stiff myself. The Duchess has a lot of ooomph as to personality and a good photographer or painter could bring that out.