Nicola Kraus is an American author best known for co-writing the bestselling novel The Nanny Diaries with Emma McLaughlin. The book, published in 2002, offers a satirical look at the lives of wealthy New Yorkers through the eyes of a nanny. It gained significant popularity and was later adapted into a film. Kraus has also written several other novels, including Nanny Returns, which continues the story of the original characters. In addition to her fiction work, she has contributed to various publications and has been involved in discussions about parenting and social issues.