Here is a selection of 10 from the screeds of books written about her.
Diana: Her True Story
By Andrew Morton
The book, and writer, who helped more than any other to tarnish the House of Windsor's reputation, by merrily peddling Diana's earliest kiss and tell revelations. In this, the first of his books about his milch cow, he acts as ventriloquist's dummy.
Love and War
By James Hewitt
The man of whom Diana said, "Yes, I was in love with him." A former army officer, Hewitt gives a hunting and fishing version of the way in which his life and hers converged.
Diana: Her Life in Fashion
By Georgina Howell
To remember Diana without recalling the frocks and jewels is to think of Blackpool without the lightbulbs. As much a clothes horse as a horsewoman, she retains a Marilyn Monroe aura, coming back to life in these outfits as if she has only briefly stepped off camera.
A Royal Duty
By Paul Burrell
Amazing the way in which former servants of the crown continued to make money off the dead princess. Despite being charged with pilfering Diana's things, a case which was later dropped, Burrell remained unabashed in claiming he was Diana's "rock".
Diana, Princess of Wales: How Sexual Politics Shook the Monarchy
By Bea Campbell
By far the best of the bunch. Though it now feels dated - it was written at a time when republicanism seemed likely to topple the Firm, whose popularity had never been lower - it is a zippily written feminist analysis of the sexism that Diana encountered in the aristocracy. This, says Campbell, "delivered Diana to her doom". Good stuff on the tabloid press's role in her life as sexual harassers too.
By John Morgan
Conspiracy theories continue to flourish, in part fuelled by Morgan's account of the inquest into Diana's death, in which he claims to have discovered cover-ups and corruption.
By James Whitaker
Now painful to read, this is an early account of the shy nursery school assistant's meteoric marriage, and her initiation into the royal fold. Whitaker could not have known that the fairy story was about to turn into a cautionary tale.
Prince of Wales: A Biography
By Jonathan Dimbleby
For a glimpse of the other side of the coin, this respectful, comprehensive and not wholly sycophantic biography is a corrective to the schools of gush and gossip that surrounded the ill-fated princess.
By Monica Ali
There's a good reason this story is untold - it's pure fiction. Ali was the first to set foot in a parallel world, offering a novel in which Diana survives the car crash and reinvents herself under a different name in small town America. Some readers loved it. Not us.
By Dean Dudley
Published this weekend, this debut e-novel tells the story of Diana surviving the car crash, and giving birth to Dodi Fayed's Muslim son. Some years later, in the wake of 9/11, her child is kidnapped. No more improbable than Diana's own life story.