Yukiko Inui completed her solo domination at the International Swimming Federation (FINA) Artistic Swimming World Series leg in Surrey in Canada to add free honours to her earlier technical title.
Inui also added a second gold alongside Japanese team-mate Kanami Nakamaki in the free duet.
Inui produced a strong score of 92.9667 in the solo free final to once again beat Ukrianian rival Yelzaveta Yakhno, who was second with 91.3667.
Jacqueline Simoneau of Canada took bronze with 90.7667.
She and Nakamaki then managed an equally strong effort of 92.9333 in the duet free final.
It followed the gold Inui won alongside Megumu Yoshida in the technical duet competition.
Yakhno took another silver medal alongside Anastasiya Savchuk with 91.7333.
Bronze went to Simoneau and Claudia Holzner of Canada with 89.5667.
Ukraine did enjoy more success today in the highlight event with a score of 92.7667.
Yakhno formed part of the 10-strong team as she continued her marathon day.
France took silver with 86.7000.
No bronze medal was awarded.