Melissa Carol Walker was born in London and raised in Chapel Hill, North Carolina. She is the daughter of Nancy Day Walker of Chapel Hill, N.C., a retired biology teacher, and the late Capt. John A. Walker Jr., a retired naval officer. Because her father was stationed at the U.S. embassy in London when she was born, she has dual U.S.-British citizenship. Walker’s father has three children from a previous marriage: Johnny, Tim, and Kristi.

She attended Chapel Hill High School and Vassar College. At Vassar, she was an English major and prolific writer for the school newspaper The Miscellany News, serving as features editor and editor in chief during her senior year.

Walker lived in London for a year after college. She currently lives in Brooklyn, New York, with her husband David Grossman. The couple was married on July 18, 2009, in Grafton, VT. Grossman is the director for business development at Inc.com.

Walker interned at McCall's in the summer between her junior and senior years of college. Upon her return to New York from London, she was an assistant editor at Rosie (formerly McCall’s) until it ceased publication in 2002. She was subsequently features editor at ELLEgirl and prom editor at Seventeen. She has written for numerous magazines, including Glamour, SELF, More, Teen Vogue, CosmoGirl, Ladies’ Home Journal, Family Circle, Fitness, and New York.

Violet on the Runway, Walker’s first novel, was published in 2007. Both sequels, Violet by Design and Violet in Private, were published a mere five months apart in 2008. The trilogy revolving around Violet Greenfield received critical accolades for its "realistic portrait of the fashion industry." She received praise in the young adult realm for weaving themes of body image and self-esteem into a coming-of-age tale.

Her latest novel, Lovestruck Summer, was published in May 2009.

Walker writes several blogs: www.melissacwalker.com/blog/; www.iheartdaily.com, a newsletter she co-founded and runs with Anne Ichikawa; and readergirlz.blogspot.com.