She is best known for co-starring in Woody Allen's 2015 film Irrational Man, alongside Joaquin Phoenix and Emma Stone.

[1] Other notable roles have been in FX's The Assassination of Gianni Versace (2018)[2] and the Lifetime television series American Princess (2019).

In 2015, von Haselberg received a favorable review for her role in the Woody Allen film Irrational Man, which starred Joaquin Phoenix and Emma Stone.

[8] Also in 2015, von Haselberg was cast in a pilot for MTV starring Nicole Byer,[9][10] and in October of the same year, she started shooting The Wizard of Lies for HBO.

[citation needed] On June 6, 2020, von Haselberg married Harry J. N. Guinness in Millbrook, New York, at the home of her parents.