The Princess Royal now boasts a net worth upwards of £20million, a royal author has claimed. Princess Anne, often described as the hardest-working royal, has continued the unmatched dedication to her duties, despite being set to turn 76 next weekend. In recent YouGov polling, the Princess Royal sits as the third favourite among the wider population, behind the future King and Queen, William and Catherine. She also visited Edinburgh on Wednesday morning, attending rehearsals for the Royal Edinburgh Military Tattoo at Redford Barracks. "Besides the house, Anne has amassed over the years an impressive and expensive collection of jewellery, as indeed all female royals do.