Dale Tryon, Baroness Tryon

On 4 November 2008, Tryon was the subject of a documentary, Prince Charles' Other Mistress, aired by Channel 4.

Living with recurring depression, and after being told by her husband that he wanted a divorce, she was detained on 17 June 1997 under the Mental Health Act 1983 for 28 days, after leaving the Black Horse Inn in Great Durnford. After discharge from the spinal injuries unit at Salisbury District Hospital, she returned home. The decree nisi was announced on 1 September, after which she renounced her title and moved into The Ritz hotel, where she intended to throw a party for her 50th birthday. From there she gave her last recorded interview with journalist Christopher Wilson.

Towards the end of her life, Tryon took a trip to Australia to meet her mother and went to India to undergo homeopathic treatment by a doctor who was introduced to her by the Prince of Wales. On her return, she was admitted to the King Edward VII Hospital, Westminster, experiencing complications from severe bed sores for which she had plastic surgery. Tryon died there on 15 November 1997 from septicaemia, aged 49. She was buried four days later in England, and in her will left her £1.3 million estate to her children.

Dale had Perthes disease and spina bifida since childhood and was diagnosed with uterine cancer in 1993. After living with spina bifida for years, she had a series of surgeries to correct the issue. After this point she travelled for a period with a nurse, a physiotherapist, and her daughter, Zoë, who would lie next to her as she slept, rolling her over regularly.

Tryon started her career in late 1960s by working as a reporter for The Australian Women's Weekly. In 1969 she moved to the UK and worked in the London office of the same magazine. In 1970s, she briefly worked as a fashion agent for an American designer in the UK. In 1983, Dale started a fashion business called Kanga, located in Beauchamp Place, Knightsbridge. Having persuaded Diana, Princess of Wales to wear a Kanga dress to the Live Aid concert, Kanga quickly became a favourite of the Sloane Ranger set and became a successful international business. Dale lived in both London and Lord Tryon's family home, the 18th-century Manor House at Great Durnford, near Salisbury. From the early 1980s her clothes were sold in shops in England, America, Australia, France and Spain, and her own boutique in Knightsbridge was later joined by branches in Salisbury, Hong Kong and Dublin. Both "Kanga" and her couture line named "The Dale Tryon Collection" were very successful.

Dale Elizabeth Tryon, Baroness Tryon (née Harper; 3 January 1948 – 15 November 1997) was a socialite in British royal court circles, as a mistress of the future King Charles III, then the Prince of Wales, and a successful businesswoman in the international fashion world. She created the fashion label "Kanga" and the couture line "The Dale Tryon Collection". "Kanga" also came to be her own nickname. Tryon gave her support to a number of charities including SANE—the mental health charity of which she was the chairwoman.

An active socialite described by family and friends as having "tremendous joie de vivre," within two weeks of arriving in England she had met Anthony Tryon, 3rd Baron Tryon (1940–2018), who was a member of Prince Charles's inner circle. Even though she had met the Prince of Wales briefly in 1966 at a school dance in Victoria, it was through her husband that she got to know him. Dale and Anthony married in 1973 in the Chapel Royal at St James's Palace, and had four children: Zoë (born 1974), Charles (born 1976), and twins Edward and Victoria (born 1979). She and Prince Charles both enjoyed fly fishing, which they undertook regularly, and he publicly described Kanga as "the only woman who ever understood me."