Blake Lively

Blake Ellender Brown was born on August 25, 1987, in the Tarzana neighborhood of Los Angeles, California. Her mother, Elaine (née McAlpin), worked as a talent scout, and her father, Ernie Lively, was an actor. Lively was named after her grandmother's brother. She has an older brother, Eric, and three half-siblings from her mother's previous marriage, Lori, Robyn, and Jason. Her parents and siblings have all worked in the entertainment industry.

During her childhood, Lively accompanied her parents to the acting classes they taught, as they did not want to leave her with a babysitter. She said that watching her parents teach helped her learn the "drills" and gain confidence as she got older and began working in the industry. She made her professional debut at age 10, when she appeared in the 1998 film Sandman, directed by Lively's father. She describes her role as a "bit part". She was initially not particularly interested in acting and wanted to attend Stanford University.

She attended Burbank High School and graduated in 2005, where she was a cheerleader, a member of the championship choir, and class president. Her elder brother asked his talent agent to send her to several auditions in the summer months. She was subsequently cast as Bridget in The Sisterhood of the Traveling Pants (2005) and filmed her scenes between her junior and senior years of high school.