The City defender is the 11th Australian woman to reach the milestone, and was also made captain to mark the occasion.
And an already memorable occasion for Kennedy was made even more special given the first match in the Matildas’ two-game series with Brazil was their first on home soil in over 18 months.
But it was one of the hosts’ other centurions who gave Tony Gustavsson’s side the lead before the break when Clare Polkinghorne tapped home from close-range after Sam Kerr had headed Steph Catley’s free kick back across goal and into her path.
Australia were once again on top after the restart and 18-year-old Mary Fowler made it two after the hour, beating Brazilian defender Leticia Santos to Emily van Egmond’s searching back post cross for her third goal in two matches.
The visitors responded soon after when Adriana halving the deficit, but van Egmond turned from scorer to provider with ten to play to put the result beyond doubt, coolly slotting home after Catley’s low ball from the byline had evaded the rapidly retreating Brazilian defence.
It was just rewards for the Matildas and Kennedy, who played the full 90 minutes in the heart of the defence to lead her national team to victory in Parramatta.
The two sides will face each other once again on Tuesday, as Australia once again play host to the Brazilians at the CommBank Stadium to round off a two-match series.
Everyone at Manchester City would like to congratulate Alanna on her landmark appearance for Australia!
City return to domestic action with a mouth-watering Women’s FA Cup semi-final clash against Chelsea on Sunday 31 October.
It’s a 12:45pm kick-off at the Academy Stadium and tickets for all home games are now on sale.