Perhaps the greatest mating in horse racing history has been a success.
Unbeaten filly Zarkava is in foal to record-breaking champion racehorse Sea The Stars, the BBC can reveal.
They have been described as the Brad Pitt and Angelina Jolie of the equine world.
Sea The Stars, who signed off his racing career with victory in the prestigious Prix de l'Arc de Triomphe in October, is set to generate annual fees of £10m from his breeding career at the Aga Khan's Gilltown Stud in County Kildare.
And the Aga Khan, who owns 2008 Arc winner Zarkava, sent his unbeaten filly to the Derby-winning colt.
It is thought the long-awaited meeting was short-lived. Most stallions complete their duties within a matter of minutes.
A stud spokesman said: "We are pleased to say Zarkava has been tested in foal to Sea The Stars."
After the planned union was announced last year, the Aga Khan had told of his hopes.
"I believe the last two Arc winners were made for each other," he said.
He believes the pair are similar in ability, temperament and conformation.
"The best needs to be bred to the best," he added.
The match-up will send vibrations around the global bloodstock community, with high expectations for the pair's blueblood offspring.
Sea The Stars is rated only a 4-1 chance by bookmakers Ladbrokes to sire a UK Classic winner in the year 2014, when the first of his progeny will be eligible for races such as the Derby at Epsom.
It was a 100-1 chance that he and Zarkava produce a horse to win the Arc in that year.
Sea The Stars, a son of Cape Cross, is standing at stud for a fee of 85,000 euros (about £80,000).
This is the charge that is paid every time an owner sends a mare to be covered by him.
With a book of 120 mares in his first year, the horse is expected to bring in about £10m in stud fees annually.
Owners the Tsui family had been considering various options for Sea The Stars after he was officially retired a fortnight ago.
Sea The Stars was hailed an all-time great after six Group One wins including a unique treble of the 2,000 Guineas, Derby and Prix de l'Arc de Triomphe.
Gilltown is close to the Curragh base of the three-year-old colt's Irish trainer John Oxx.
The Aga Khan said the decision to use his stud brought him "the greatest happiness".
He stated: "We are all proud to have such a remarkable athlete."
Although the bloodlines are impeccable, nothing in racing is guaranteed and the arrival - and subsequent performance - of the foal will be keenly awaited.