Simone Biles's appetite for victory is insatiable.

The American superstar claimed a third, then a fourth gold medal at the 2023 gymnastics world championships by winning the women's balance beam and floor finals in a dominant fashion on the final day of the competition.

Biles, who had already won two golds before Sunday's final events, started her afternoon with a superb beam routine, oozing confidence throughout.

She had no hesitation on her jumps and delivered controlled spins before dismounting in style, with just a small hop when landing. She earned a score of 14.800 points to win ahead of China's Zhou Yaqin by a margin of just 0.1 of a point. Rebeca Andrade of Brazil took the bronze medal.

Biles later took to the mat for her last appearance of a busy week, in the floor final. She had posted the highest score in qualifying and impressed again with a series of spectacular tumbling passes that wowed the crowd, reaching impressive height on her leaps.

Although she stepped out of bounds midway through her highly difficult routine, Biles earned the day's best score, 14.633 points. It was Biles' sixth world floor championship, a discipline where she remains undefeated.

Andrade, another star of the sport, took the silver medal ahead of her Brazil teammate Flavia Saraiva.

In Antwerp -- where she started her collection of 23 world titles 10 years ago as a 16-year-old -- Biles has made a stunning return to the international stage.

She also claimed a silver medal on vault after the sixth all-around title that made her the most decorated gymnast in history, male or female. And she led the US women to a record seventh straight victory in the team event.

Biles has won a record 37 medals at the world championships and Olympics.

Biles was competing at her first world championships since 2019 this week after a two-year break she used to focus on her mental health following the Tokyo Olympics. She only returned to competition this summer.

In the men's competition, Jake Jarman gave Britain its first medal by taking gold in the vault with a combined score of 15.050 points.

His total allowed him to leapfrog American Khoi Young by a margin of 0.201.

Lukas Dauser of Germany took gold in the men's parallel bars with a huge 15.400, finishing ahead of China's Shi Cong and Kaito Sugimoto of Japan.