Princess Anne at the Derby in 1983 (Image: Getty)
Princess Anne, 72, has the most incredible physique, having been a former Olympic equestrian and one of the hardest-working members of the Royal Family.
The Princess Royal is also renowned for being able to still wear clothes from when she was a teenager and in her early twenties.
For instance, the gorgeous mustard yellow double-breasted bespoke coat designed by Susan Small, which Princess Anne first wore in 1980, is still in the royal's closet.
Anne stepped out wearing the dress in 2011 at Royal Ascot and again in 2015, proving her thrifty and sustainable nature.
Another example is her yellow and navy plaid blazer which Princess Anne first wore in 1988.
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Princess Anne at Ascot in 2011 (Image: Getty)
The Princess Royal surprised fans everywhere when she stepped out wearing the exact same outfit at King Charles's Scottish Coronation only a few weeks ago.
What diet does Princess Anne follow which could explain why she is still able to wear these clothes decade after decade?
Princess Anne has the most interesting royal diet. The King's sister has some incredibly thrifty eating habits, despite having access to personal chefs, the freshest ingredients, and invitations to many of the top restaurants in the world.
The Princess Royal is quite down to earth and once cited her spacious walk-in fridge as her favourite spot in the house in an interview with The Lady magazine.
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Princess Anne in Soviet Union in 1990 (Image: Getty)
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According to reports, Princess Anne likes to start her day with a bowl of fruit to give her metabolism a naturally sweet boost.
However, the way she is said to eat her bananas may make royal fans' stomachs turn.
The King's sister reportedly makes the odd request that her bananas be past their expiration date.
Former royal chef Darren McGrady previously told TODAY: "[Princess Anne] almost always preferred the bananas almost black - overripe - because they digest easier."
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Princess Anne wore this coat at Scottish Coronation (Image: Getty)
Anne has been known to appreciate kippers, a type of smoked herring, despite the fact that virtually little is known about the Princess's typical eating habits.
The salty fish is most frequently consumed at breakfast with eggs, but it also tastes great when served in a salad or with buttery new potatoes for lunch.
Princess Anne guest-edited a Country Life magazine issue in honour of her 70th birthday in 2020.
The Princess shared her favourite thing to eat for dinner, and it is incredibly opulent. According to Anne, devilled pheasant is her go-to dinner.
Princess Anne timeline
1950 - Anne Elizabeth Alice Louise is born at Clarence House
1970 - Becomes the patron of Save the Children
1971 - Wins BBC Sports Personality of the Year
1973 - Anne's royal wedding to Captain Mark Phillips
1974 - Attempted kidnapping by Ian Ball on Pall Mall
1976 - Competes in the Montreal Olympic Games
1977 - Peter Phillips is born
1981 - Zara Phillips is born
1989 - Anne and Mark Phillips announce their separation. Anne is romantically linked to Timothy Laurence, who was serving as the Queen's equerry.
April 1993 - Anne and Mark Phillips divorce is finalised
December 1993 - Anne marries Timothy Laurence in the Church of Scotland
2002 - Becomes first royal convicted of criminal offence after her dogs bites two children
2010 - Anne became a grandmother for the first time to Peter's daughter Savannah
2018 - Anne and Sir Timothy celebrate their 25th wedding anniversary
2022 April - Anne and her husband toured Australia and Papua New Guinea to mark the Queen's Platinum Jubilee
2022 September - Anne became the first woman ever to stand guard at any Vigil of the Princes
Princess Anne timeline
1950 - Anne Elizabeth Alice Louise is born at Clarence House
1970 - Becomes the patron of Save the Children
1971 - Wins BBC Sports Personality of the Year
1973 - Anne's royal wedding to Captain Mark Phillips
1974 - Attempted kidnapping by Ian Ball on Pall Mall
1976 - Competes in the Montreal Olympic Games
1977 - Peter Phillips is born
1981 - Zara Phillips is born
1989 - Anne and Mark Phillips announce their separation. Anne is romantically linked to Timothy Laurence, who was serving as the Queen's equerry.
April 1993 - Anne and Mark Phillips divorce is finalised
December 1993 - Anne marries Timothy Laurence in the Church of Scotland
2002 - Becomes first royal convicted of criminal offence after her dogs bites two children
2010 - Anne became a grandmother for the first time to Peter's daughter Savannah
2018 - Anne and Sir Timothy celebrate their 25th wedding anniversary
2022 April - Anne and her husband toured Australia and Papua New Guinea to mark the Queen's Platinum Jubilee
2022 September - Anne became the first woman ever to stand guard at any Vigil of the Princes
1950 - Anne Elizabeth Alice Louise is born at Clarence House
1970 - Becomes the patron of Save the Children
1971 - Wins BBC Sports Personality of the Year
1973 - Anne's royal wedding to Captain Mark Phillips
1974 - Attempted kidnapping by Ian Ball on Pall Mall
1976 - Competes in the Montreal Olympic Games
1977 - Peter Phillips is born
1981 - Zara Phillips is born
1989 - Anne and Mark Phillips announce their separation. Anne is romantically linked to Timothy Laurence, who was serving as the Queen's equerry.
April 1993 - Anne and Mark Phillips divorce is finalised
December 1993 - Anne marries Timothy Laurence in the Church of Scotland
2002 - Becomes first royal convicted of criminal offence after her dogs bites two children
2010 - Anne became a grandmother for the first time to Peter's daughter Savannah
2018 - Anne and Sir Timothy celebrate their 25th wedding anniversary
2022 April - Anne and her husband toured Australia and Papua New Guinea to mark the Queen's Platinum Jubilee
2022 September - Anne became the first woman ever to stand guard at any Vigil of the Princes
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