Bella Thorne was born on October 8, 1997, in Pembroke Pines, Florida. She is the youngest of four children, the others being Kaili (born in 1992), Dani (born in 1993), and Remy (born in 1995), who are also actors and models. Thorne, who is of Italian, Cuban, and Irish descent, spoke Spanish as her first language, although she has forgotten it.
Thorne's first film appearance was an uncredited role as a sidelines fan in the 2003 film Stuck on You. She has since appeared in film and television projects including Jimmy Kimmel Live!, Entourage, The O.C. (as a younger version of Taylor Townsend), the third-last episode of October Road (as Angela Ferilli, the pre-adolescence crush of the main characters; her older brother Remy also guest-starred in the same episode as a younger Eddie Latekka), and five episodes of Dirty Sexy Money (as Margaux Darling). In 2007 Thorne appeared as a young girl plagued by supernatural visions in The Seer.
In 2008, Thorne starred alongside Christian Slater and Taylor Lautner in the short-lived drama series My Own Worst Enemy, for which she won a Young Artist's Award for her portrayal of the character Ruthy Spivey; Thorne described her Enemy casting as a major breakthrough as this was the first recurring role in her career. She then appeared in the ten-episode web seriesLittle Monk, which depicted characters from the series Monk as children. In 2009, she filled the role of the vengeful antagonist in the horror film Forget Me Not.
In 2010, Thorne joined the cast of HBO's Big Love in its fourth season, replacing Jolean Wejbe in the role of Bill Henrickson's daughter Tancy 'Teeny' Henrickson (though she had actually auditioned for a different role). She also guest starred on Wizards of Waverly Place, as Max's girlfriend Nancy Lukey. In addition, Thorne took on a supporting role in the family drama Raspberry Magic.
Thorne currently co-stars on the Disney Channel sitcom Shake It Up!, (originally titled Dance, Dance Chicago). Thorne plays CeCe Jones, a dancer with heavy ambitions for a career in the spotlight. The show is a buddy comedy centered around a teen dance show (in a show-within-a-show format) co-starring Thorne and Zendaya. The multi-camera series began production in Hollywood, California, in July 2010 and premiered on November 7, 2010 on Disney Channel. While she had a substantial portfolio of work in television and film, Thorne had no experience in professional dancing before being cast. After signing onto the show in October 2009, she began taking three dance classes every night.