Early life and education
Giarratana was born October 1, 1993. Her parents are visual effects artists in the movie industry, with their careers relocating them from New York and Miami to Southern California.
Giarratana became interested in acting at a young age, but did not become involved with theater until middle school. She attended the UCLA school of Theatre, Film, and Television, where she obtained a BA in theatre. There, Giarratana was a member of Company, a tradition for the annual UCLA Spring Sing competition. In 2016, she starred as Gretel alongside Caleb Foote and Bradley Whitford in Hansel & Gretel Bluegrass at the 24th Street Theatre in Los Angeles.
Career
In late 2020, Giarratana performed as part of ABC's Los Angeles Talent Showcase. In late 2022, she appeared in an Alexa commercial for Amazon Prime. Giarratana co-hosts the improv comedy podcast Artists on Artists on Artists on Artists with Kylie Brakeman, Jeremy Culhane, and Patrick McDonald and is a member of the comedy group the Upright Citizens Brigade. Giarratana is a member of SAG-AFTRA.
Smosh
Giarratana was introduced to Smosh through McDonald, who was a head writer at the company. She began working at Smosh as a sketch writer. Giarratana joined the Smosh cast in August 2022. Beginning in 2023, Giarratana appeared on Smosh Games's Sword AF, a Dungeons & Dragons actual play show.
In 2024, Giarratana became the host of Bit City, a Smosh main channel variety series blending sketch and live comedy, where she led segments with both scripted and improvised humor. On the May 10, 2025, episode of the show, Giarratana received a tattoo on camera after losing a game; her chosen design was "tony" in cursive, the name of her cat. Later in 2025, Giarratana was a cast member on Smosh's actual play show We're All Gonna Die, which uses the Dread system.
Other work
In 2024, Giarratana co-produced the short film guts, in which she also acted. The film, shot in a single day, explores disordered eating, and is partially drawn from Giarratana's own experiences. The film was screened at the Sundance Film Festival that year. Giarratana also featured in the 2026 short film Balloon Animals (directed by Anna Baumgarten), which also screened at Sundance.
Giarratana has appeared on multiple Dropout TV programs, including Make Some Noise, Game Changer, and Very Important People. She has also guested on Comedy Bang! Bang!, Hollywood Handbook, Doughboys, and Good Christian Fun. Giarratana featured in the StarKid Productions musicals Black Friday (as Lex Foster), Nerdy Prudes Must Die (as Grace Chasity), and Cinderella's Castle (as The Stepmother). On September 14, 2026, it was announced that Giarratana would be reprising her role as Grace Chasity in a 2027 revival of Nerdy Prudes Must Die along with the rest of the original cast at London's West End theatre.
