Sarah Mlynowski is a renowned New York Times and USA Today bestselling author. Born in Montreal, Canada, on January 4, 1977, she is the daughter of the romance writer, Elissa Ambrose. After graduating with an honors degree in English literature from McGill University, Sarah moved to Toronto to work for Harlequin Enterprises. While she never met Fabio, she used her experience in romance publishing to fuel her first novel, Milkrun, which has been published in 16 countries, selling over 600,000 copies worldwide.

Sarah's second novel, Fishbowl, received significant acclaim, including a starred review from Booklist and being named one of Waldenbooks Best Women's Fiction novels of 2002. She subsequently moved to New York City to pursue writing full-time.

Over the years, Sarah has authored numerous books for teens, tweens, kids, and adults. Her popular series include the Whatever After series, the Magic in Manhattan series, the Best Wishes series, and the Upside-Down Magic series, co-authored with Lauren Myracle and Emily Jenkins, which was adapted into a Disney Channel movie. Some of her other works include As Seen on TV, Monkey Business, Me vs. Me, Bras & Broomsticks, Frogs & French Kisses, Spells & Sleeping Bags, and Parties & Potions.

Sarah has also co-edited the bestselling chick-lit anthology Girls' Night In and contributed to various anthologies, including American Girls About Town and Sixteen: Stories About That Sweet and Bitter Birthday. Her books have been translated into twenty-nine languages and optioned for Hollywood adaptations.

Sarah currently resides in Los Angeles with her husband and two daughters.