Nikki Blonsky

Blonsky was born and raised in Great Neck, New York. She and her brother Joey are the children of Karen, a school aide, and Carl Blonsky, a municipal worker for the village water pollution control district. Her father is Jewish, and her mother is Roman Catholic.

Blonsky attended Great Neck North Middle School and attended John L. Miller Great Neck North High School, and switched to Village School after a year at the latter. She additionally attended the after-school theatre program at William A. Shine Great Neck South High School daily, where she participated in productions of Les Misérables, Sweeney Todd, Kiss Me, Kate, and the title role of the opera Carmen.Blonsky made her screen debut as Tracy Turnblad in the musical feature film Hairspray, which is an adaptation of the musical of the same name. She auditioned for the role as a high-school student with no professional acting or singing background at the time, and beat out eleven-hundred candidates. The film was released to commercial and critical success, and became Blonsky's first role. She received praise for her performance, with Roger Ebert of The Chicago Sun-Times writing "Without somebody like Nikki Blonsky at the heart of the movie, it might fall flat, but everybody works at her level of happiness..." She received several awards and nominations, including winning two Critic's Choice Awards for Best Actress and Best Acting Ensemble, and being nominated for the Golden Globe Award for Best Actress and the Screen Actors Guild Award for Outstanding Performance by a Cast in a Motion Picture.

On June 22, 2008, she sang The Star-Spangled Banner in the pre-race ceremony at the 2008 Toyota/Save Mart 350 at Infineon Raceway. Blonsky also co-starred in the MTV mystery series Valemont in 2009. In 2010, Blonsky co-starred with Raven Goodwin in the short lived ABC Family series Huge, which premiered in June 2010, and ran for one season. Entertainment Weekly described her as the show's "great asset" and praised her for having "the delicate skill to make Will’s anger take the forms of both sincerity and a funny sarcasm." For Huge, she received a nomination for a Teen Choice Award.

In 2011, Blonsky earned a cosmetology license, and began working part-time as a hairstylist and make-up artist in her hometown of Great Neck, New York, between acting auditions. In 2013, Blonsky appeared in two episodes of the NBC Broadway drama series Smash. Later that year, she appeared in the film adaptation of the book Geography Club. The film received mixed reviews, however she and the cast were nominated for an award at the ShoWest Convention in 2014.

Blonsky appeared Off-Broadway in the play Stuffed by Lisa Lampanelli at the Westside Theatre in October 2017 to November 2017. In 2020, Blonsky launched her video blogging series on her Instagram account, in which she chats with other celebrities.