Philipps also said she was pleased with the profile of Harry and the depiction of his nose, which was broken during a rugby match when he was being schooled in Eton.

The gallery commissioned the historic work, painted by London-based artist Nicky Philipps, after a series of sittings at her studio in the South Kensington neighborhood.

'Magnesium plays a vital role in maintaining blood glucose levels, muscle health,' says nutritional therapist Dr Elisabeth Philipps. 'a deficiency can leave you feeling lethargic.