Graduated from acting faculty at the PWST in Cracow. Even during her studies, she participated in the classes of the Acting Study, offered at TR within the scope of the project Area Warsaw. Since 2005, she is a member of the TR Warszawa ensemble.
Gąsiorowska acted in the Old Theatre in Cracow (Night [Noc] by Andrzej Stasiuk, directed by Mikołaj Grabowski, 2005) and in the Laboratory of Drama in Warsaw (Tiramisu by Joanna Owsianko, directed by Aldona Figura, 2005). She also appeared in the plays of the Polish TV Theatre, among others Key (Klucz) directed by Wojciech Smarzowski (2005), Zorka directed by Łukasz Wylężałek (2006) and Doctor Halina(Doktor Halina) directed by Marcin Wrona (2008).
She played significant film roles, among others in Tomorrow's Weather (Pogoda na jutro) by Jerzy Stuhr (2003), Ode to joy (Oda do radości) directed by Anna Kazejak-Dawid, Jan Komasa and Maciej Migas (2005), Polish-Russian War (Wojna polsko-ruska) by Xawery Żuławski (2009), Suicide Room (Sala samobójców) by Jan Komasa (2011) and Ki by Leszek Dawid (2011).
In 2005, at the 65th Kalisz Theatre Meetings she received an award in the category "young actor" for her performance in Cold child (Zimne dziecko) by Marius von Mayenburg. In 2011 for her role in Ki she received the Golden Lion Award (Złoty Lew) in the category Best Actress and the Golden Duck Award (Złota Kaczka) for Best Actress of the 2010/2011 season.
Performances in TR Warszawa:
- Disco Pigs, 2003, directed by Krzysztof Jaworski
- Dreams (Sny), 2004, directed by Łukasz Kos
- Bash, 2004, directed by -> (Grzegorz Jarzyna)
- Whatever happens, I love you, 2005, directed by Przemysław Wojcieszek
- Giovanni, 2006, directed by Grzegorz Jarzyna
- Two poor, Polish-speaking Romanians, 2006, directed by Przemysław Wojcieszek
- The Picture of Dorian Gray, 2009, directed by Michał Borczuch
- No matter how hard we tried, 2009, directed by Grzegorz Jarzyna
- Jackson Pollesch, 2011, directed by Rene Pollesch
- The Bat, 2012, directed by Kornel Mundruczó
- The Martyrs, 2015, directed by Grzegorz Jarzyna