Kraus was born in New York City and graduated from New York University's Gallatin School of Individualized Study. She met Emma McLaughlin while both were attending New York University, and working as nannies. She lived as a child at 1000 Park Avenue, whose residents she claims inspired some of the characters in her fiction.
Kraus married David Wheir on June 14, 2008.
Nicola Kraus, with Emma McLaughlin, is the New York Times bestselling authors of THE NANNY DIARIES, CITIZEN GIRL, DEDICATION, NANNY RETURNS, and their young adult novels, THE REAL REAL and OVER YOU.
They work together in New York City.