Fun, cool, sweet and free-spirited – that's how friends describe Cressida Bonas, who has been Prince Harry's love interest since May 2012.
Romance blossomed after his cousin Princess Eugenie introduced them.
When the dashing royal pilot was posted to Afghanistan he stayed in touch through letters and phone calls. On his return the relationship quickly became serious, with the pair spending days closeted away together at his Kensington Palace apartment.
While Cressy, as she's known to friends, enjoyed his attention she was wary of his obvious desire for marriage and children. In time the winsome society girl has become open to the idea and the thought of marrying into the world's most high-profile family.
It was in her company that the Queen's grandson attended Glastonbury for the first time. At the music festival the Prince jokingly warned Rolling Stone Ronnie Wood off his girlfriend. "He introduced me to his bird," said guitar ace Ronnie. "I gave her a cuddle and he said 'Oi, get your hands off'."
The English rose was a boarder at exclusive public school Stowe, before going on study dance at Leeds University and at the Trinity Laban Conservatoire.
If they do marry, Cressida's sprawling bohemian family would certainly be an interesting addition to the Windsor clan.
Born in 1989, she is the daughter of Lady Mary-Gaye Curzon, 66, a celebrated Sixties beauty and daughter of the 6th Earl Howe. Her father is Lady Mary-Gaye's third husband, the businessman Jeffrey Bonas.
Their daughter was named after Shakespeare play Troilus and Cressida. Sadly, their marriage only lasted six years.
Previously Mary-Gaye was the wife of Esmond Cooper-Key. In 1973, they had a daughter Pandora, who works for Vivienne Westwood.
She has three more children from her nine-year union to John Anstruther-Gough-Calthorpe: Georgiana, born 1978, Isabella born 1980 and Jacobi born 1983.
Isabella, an actress, is briefly said to have caught Prince William's eye. She is now married to Richard Branson's son Sam. At their exotic nuptials in the South African bush, Cressida sang George Gershwin's Love Is Here To Stay so sweetly the bride was moved to tears.
Polo-playing man about town Jacobi is friends with William.
Cressida apparently dated Harry Wentworth-Stanley, 23, whose stepfather, the Marquess of Milford Haven (George Milford Haven), is a cousin of the Queen.
But insiders believe that her latest royal relationship may go the distance.
"When they first started dating, their body language suggested Harry was much more into the relationship," says one. "But recently they've looked much more together as a couple."
"They're very compatible, they have the same sense of fun and adventure. No one would be at all surprised if they married."