The US rider had led after dressage, but slipped to 4th after cross-country before bouncing back; Canadians won the 4*-S and the 2*-L.

The Aussie moved to the top of the leaderboard with both her rides ahead of Canada's Jessica Phoenix and Wabbit following Saturday's cross-country.

After winning the dressage phase of the CCI4*-L the day before, the American celebrated her birthday with another strong test.

The popular Musical Ride will have two performances – June 6 and 7 – at the Bromont Olympic Equestrian Park.