Background
Greene was born in Jacksonville, Florida, and is the daughter of Michele (née Tatum), who works in insurance, and Joe Greene, a U.S. Marine who now owns his own concrete business. She grew up in Middleburg and Jacksonville together with her older brother Joe, and went to University Christian School before transferring to Wolfson High School when she was in tenth grade. At the age of 17 she moved to Los Angeles, California to start an acting career.
At first she planned to become a model, but was told that she was not tall enough(1.65 m) to be a fashion model and should instead focus on acting in commercials. After taking commercial and acting classes, she fell in love with acting and realized that she preferred it over modeling. Greene graduated from high school early and moved to Los Angeles.
Greene's big break came in 2008 when she was cast as Alice Cullen in Twilight, a film based on the novel of the same name by Stephenie Meyer. Certainly Twilight has opened a lot of doors for this rising talent. She was seen in the 2009 thriller called Summer’s Blood. After that she reprised her role as Alice Cullen in New Moon and Eclipse and Breaking Dawn: Part 1 & 2.