Royal Ascot Racecourse was a sea of salmon on Saturday.
The distinct black polka dot pattern matching the silks of Australian mare Black Caviar could be seen on dresses, handbags, neck ties, waistcoats, flags and baseball caps throughout the 80,000 capacity crowd.
It was clear what the spectators had flocked to see and Peter Moody's charge didn't disappoint.
Winning the 1200m Diamond Jubilee Stakes by a head and bagging her owners STG222,800 ($A347,853.24) prize money thrilled the thousands of Australians who flocked to the royal course.
"We have come over just for this, it would have been a downer had she not won, so we're very relieved she held on," said Melbourne man Mark De Campo, proudly wearing a hat in Black Caviar colours.
As punters entered the British course on Saturday they were offered complimentary "Go Black Caviar" signs which were waved madly during the Group 1 feature.
Even within the prestigious Royal Enclosure the Black Caviar theme continued.
"Regardless of Australian or British or other visitors, all the money was on Black Caviar. I heard no one yelling for any other horse" Sydney man and Royal Enclosure spectator Kym Fullgrabe told AAP.
Royal Ascot public affairs spokesman Nick Smith said there were in excess of 5,000 Australians expected among Saturday's crowd.
"It's got to be more than that. Everywhere you turn you hear Aussie accents," said Joey from Melbourne.
"I bought my tie online for 30 quid (pounds) foolishly believing I might have been only one of a few here wearing it. Look at them all."
The third in a six-race program, the crowd noticeably thinned after Black Caviar's performance, although some followers would have preferred better odds on the 1-6 favourite.
"I can't complain. To tell the truth I would have paid to see her win," said Joey who collected STG60 ($A93.68) for his STG50 ($A78.06) bet on Black Caviar.