*MKILETEWA HAPA NA FLORA LYIMO DESIGNER*
Nine years after the car crash in the Paris  tunnel that killed Princess Diana, I attended a ball at Althorp, the Spencer  family’s grand home in Northamptonshire. 
The party was hosted, improbably, by former  Soviet President Mikhail Gorbachev (with Tatler magazine) to raise money for his  late wife Raisa’s foundation. The people partying in the tent that night were  Diana’s crowd — the London uber-swirl of fashion, society and media.  
Had she been there, Diana would have lit up  the gathering with her radiant blondeness. Sitting next to old Gorby, she would  have caused his birthmark to flush deeper as she leaned in to hear him speak of  his wife, grasping his hand as she fixed her big blue eyes on him.  
 
  Double act: How Diana might have looked with the Duchess  of Cambridge, had she lived until her 50th birthday"
 
  And of course she would have been a Facebook  addict...probably"
Diana would have been 50 tomorrow. What would  she have been like? Still great looking — that’s a given. 
Her mother, Frances Shand Kydd, with her  cornflower-blue eyes and striding sexuality, was a handsome woman to the very  end. 
Fashion-wise, Diana would have gone the  J  Crew and Galliano route a la Michelle Obama, always knowing how to mix casual  with glam. There is no doubt she would have kept her chin taut with strategic  Botox shots and her bare arms buff from the gym. 
Remarriage? At least two, I suspect, on both  sides of the Atlantic. Always so professional herself, she would have soon grown  exasperated with Dodi Fayed’s hopeless unreliability. 
After the break-up, I see her moving to her  favourite city, New York, spending a few cocooned years safely married to a  super-rich hedge-fund manager who could provide her with what she called ‘all  the toys’: plane, private island and bodyguards. 
Gliding sleekly into her 40s, her romantic   taste would have moved to men of power over boys of play. 
She’d have tired of the hedge-fund manager and  drifted into undercover trysts with more exciting men — a late-night talk-show  host or a globe-trotting French finance wizard destined for the Elysee Palace.  
 
  Diana and Dodi in the early days of their love affair, but  would she have become exasperated with his 'hopeless unreliability'?
I suspect she would have retained a weakness  for men in uniform and a yen for dashing Muslim men. (A two-year fling with a  Pakistani general, rumoured to have links to the country’s controversial  intelligence service, would have been a particular headache to the Foreign  Office and the U.S. State Department.) 
Davos and the Clinton Global Initiative (an  annual gathering of those involved with former U.S. President Bill Clinton’s  charity) would have become her new post-palace power circles.
Perhaps she would have caused a Press  sensation with an unplanned pledge from the CGI stage to raise $50 million to  help educate women in southern Sudan.
Back in Britain to visit William and Harry,  she would have enjoyed some elegant schadenfreude over the scandal at Rupert  Murdoch’s News Corp when it was revealed that for years some employees had been  hacking into the phones of celebrities and royals and publishing their illicit  skimmings. 
She would have sued for sure, and collected  record-breaking damages (which she would have donated to the children’s cancer  ward at Great Ormond Street Hospital for Children). 
Is it possible that even Squidgygate, the  embarrassingly steamy phone call between Diana and her lover James Gilbey in  December 1989, was really one of the earliest examples of Press malfeasance?  
I never believed the bizarre explanation,  investigated at length in my book The Diana Chronicles, that  a radio ham named  Cyril Reenan had picked up this call and offered it to Murdoch’s tabloid The  Sun. 
Was Reenan — who later spoke of ‘being set up  by a sinister conspiracy’ and who died in 2004 — really a cover for a nefarious  phone hacker?
If so, Diana’s obsession about eavesdroppers  in the last days of her life — often mocked as paranoia — was simply the sound  intuition of a careful student of the ways of Fleet Street.
Politically, she would have been very much at  home with David Cameron and the Old Etonians who now  run Britain. She would  have parted company with Tony Blair much earlier, stung by his failure to use  her for peace-making missions overseas.   
 Reconciled? Diana's brother Earl Spencer,  with his  former wife Caroline before he left her and, Diana's mother Frances Shand  Kydd with her piercing cornflower blue eyes and good looks"
 
He would have tried to woo her back, but Diana  was shrewd when it came to the conducting of feuds.
While I suspect she would have been reconciled  with her mother, I doubt she would have forgiven her brother, Earl Spencer, for  abruptly withdrawing the refuge of a house in Althorp’s grounds after the  collapse of her marriage, the time she needed it most.
And she would have found the way he dumped his  second wife, Caroline Freud, within four months of her giving birth, as fresh  evidence of his entitled beastliness.
I believe her best male friend in later years  would have been, poignantly, her reviled first husband. As the financier Sir  James Goldsmith once put it.
‘When you marry your mistress, you create a  job vacancy’, and having married Camilla, Charles would suddenly have found the  company of his former wife strangely comforting. 
With time, Diana would no longer have found  Charles’s causes so tiresome. Rather, she’d have empathised. 
After so many loves and losses, she would  finally have let go of her rancour towards Camilla. The Duchess’s galleon-size  Lady Bracknell hat at William’s wedding would have offered satisfaction enough.  
 
  What would she have made of her former husband's marriage  to Camilla?
Besides, there were other rivals to worry  about.
Among her global girlfriend set, she might  view Queen Rania of Jordan’s beauty, youth and social conscience as a triple  threat that should be watched. 
After some initial competitiveness with Carla  Bruni-Sarkozy, she’d have probably bonded with her over ways to dodge Silvio  Berlusconi.
And Kate, the newly minted Duchess of  Cambridge? How would Diana have handled her son’s steadfast affection for a  woman other than herself? 
The rising public adoration of Kate would have  afforded Diana some tricky moments. Pleased, yes, but, like Frances Shand Kydd —  who, days before Diana’s wedding to Prince Charles, suddenly burst out: ‘I have  good, long legs, like my daughter’ — she would have had to adjust to a  broadening of the limelight. 
Her edge over Kate, of course, was her epic of  princessly suffering, which would always make her story more interesting.  (‘Happily ever after’ never has the same allure to the Press as: ‘It all went  horribly wrong.’) 
Rejoicing in her flawless Spencer pedigree,  Diana would have positioned herself as a firm defender of the Middletons against  the palace snobs — she would have ostentatiously made Carole Middleton, Kate’s  dynamic mother, her new BFF (best friend for ever).
Would our heroine have found peace?  
Yes, I believe she would have been sustained  by the two things she cared about most: her children and her humanitarian  passion. 
In July 1997, Diana told me she’d been  discussing the idea of making TV films about the causes she worked so hard for:  the victims of land mines, leprosy and HIV/Aids. 
For a woman whose private life was ruled by  her heart, I found her a surprisingly good executive. 
She knew how to make things happen and how to  run a team. She had a galvanic focus when her compassionate feelings were  stirred. 
Had she lived, the Princess Diana Foundation,  fuelled by a steady pipeline of adoring billionaire former boyfriends, would  have become hugely prestigious and powerful. 
 
  Always there first in a hard hat': Diana's support for  humanitarian causes would have multiplied had she lived"
She would also have been astute enough to turn  her back on money that failed the ‘smell test’. The woman who left school  without an O-level to her name would have been smarter than the London School of  Economics: no money from Gaddafi’s son Saif. 
 
  Limelight: The wedding of her beloved Prince William to  Kate Middleton would have pleased but challenged her"
In the world disasters of the past few years —  9/11, the tsunamis, the Pakistan earthquake, Hurricane Katrina — you know Diana  would have been first at the scene in a hard hat with a camera crew (and ten  million followers on Twitter). 
She would have kept her  spotlight trained on  individual sufferers whom she’d continue to visit, care for and touch.  
At a time when the world has disaster fatigue,  I miss the generosity of her star power and what it could  accomplish.
‘Don’t worry, Mummy,’ 14-year-old William told  his mother when he learned she’d been stripped of the title of Her Royal  Highness at the time of her divorce. ‘I will give it back to you one day when I  am King.’
In many ways, he already has. He made such  clear efforts to include the memory of his mother in the most important day of  his life.
The engagement ring he placed on Kate’s finger  belonged to Diana.
The opening hymn at the wedding, Guide Me, O  Thou Great Redeemer, was one of Diana’s favourites, chosen by William and Harry  to close her funeral and the memorial service that marked the tenth anniversary  of her death.
But perhaps more than any other gesture, in  the days before the Royal Wedding, William took Kate on a sacred trip to visit  Diana’s grave on the island in the lake at Althorp.
He had waited all these years to do it,  showing his wife-to-be that Diana still lives and is vibrant in his memory. And  in ours.