Prince Harry was reportedly overcome with emotion during his first date with Meghan Markle in 2016, as her choice of fragrance - Jo Malone's Wild Bluebell - reminded him of his mother, Princess Diana.
The scent shared key notes with Diana's signature perfume, Penhaligon's Bluebell, including lily of the valley, rose, jasmine and clove.
Fragrances have a powerful link to memories, as the olfactory system is directly connected to the brain's limbic system, which controls emotions and memory.
This connection allows certain scents to evoke vivid recall moments and deep emotional responses.
Many royal women have a preferred perfume, from Queen Elizabeth II's timeless Chanel No. 5 to the Princess of Wales' Jo Malone Orange Blossom Cologne.
Fortunately for royal enthusiasts, many of these iconic fragrances are available to purchase on Amazon at competitive prices.
Catherine, Princess of Wales
Jo Malone Orange Blossom Cologne, 30ml
Kate Middleton is thought to be a fan of Jo Malone London's Orange Blossom Cologne, a delicate floral fragrance with warm undertones.
It's believed that candles infused with this scent were used to fragrance Westminster Abbey on her wedding day.
In fact, Jo Malone's citrus-inspired scents - Orange Blossom, Grapefruit, and Lime, Basil & Mandarin - helped create a luxurious ambiance for the grand occasion.
Queen Elizabeth II
Chanel No. 5 Eau de Parfum, 35ml
The late Queen Elizabeth reportedly favoured the classic Chanel No. 5.
In a 1955 letter to Prince Philip's chief of staff Frederick Arthur Montague Browning, she wrote: 'As usual, you have discovered just the very thing I particularly wanted, and I want to thank you very much indeed for the birthday present of the Chanel scent.
'I am already using it and, I hope, smelling all the better for it!'
Guerlain L'Heure Bleue Eau de Parfum, 75ml
Another of Queen Elizabeth's signature scents was Guerlain's L'Heure Bleue, described as a fragrance that captures the essence of 'suspended time' when day meets night.
With spicy citrus top notes and base notes of iris, gourmand vanilla, benzoin and tonka bean, it has remained a timeless classic since its creation in 1912.
Meghan, Duchess of Sussex
Wild Bluebell by Jo Malone Eau de Cologne, 30ml
Meghan Markle has drawn inspiration from Princess Diana in both fashion and fragrance.
One of her favourites, Jo Malone's Wild Bluebell, shares similarities with Diana's beloved Penhaligon's Bluebell, blending floral and citrus notes.
It is described as 'the delicate sweetness of dewy bluebells suffused with lily of the valley and eglantine, and a luscious twist of persimmon'.
Wood Sage & Sea Salt Cologne by Jo Malone Eau de Cologne, 100ml
Another of Meghan's go-to scents is Wood Sage & Sea Salt by Jo Malone, inspired by the natural beauty of the British Isles.
She previously expressed her love for fragrances in an interview with a newspaper, saying: 'Fragrance is my favourite thing - so much so that if I leave the house and I don't put any on, I'll turn around and go back home. I alternate between a few scents.'
Sophie, Duchess of Edinburgh
Queen Letizia of Spain