Sarah Ann Hildebrandt is born September 23, 1993. She is an American freestyle wrestler.

Sarah Hildebrandt is a four-time medalist at the World Wrestling Championships and a gold medalist at the Pan American Games.

She is also a seven-time gold medalist at the Pan American Wrestling Championships

She married Otto Gillen, an American citizen, on November 3, 2019.

She won one of the bronze medals in the women's 50 kg event at the 2020 Summer Olympics in Tokyo, Japan.

She is a four-time medalist at the World Wrestling Championships and a gold medalist at the Pan American Games.

She is also a seven-time gold medalist at the Pan American Wrestling Championships.

Hildebrandt won one of the bronze medals in the women's 50 kg event at the 2022 World Wrestling Championships held in Belgrade, Serbia.

In 2023, Hildebrandt won the gold medal in her event at the Pan American Wrestling Championships held in Buenos Aires, Argentina.

Hildebrandt earned a quota place for the United States for the 2024 Summer Olympics in Paris, France.