Julie Murphy & Sierra Simone are truly BFF goals. When they first burst on the scene together with A Merry Little Meet Cute , we could not believe the power duo that was being created and immediately had to run to the nearest bookstore to pick up a copy for ourselves. And now their taking their iconic partnership one step further with a brand new series that will have you ready for the kind of lessons that they can only teach.

Cosmopolitan has an exclusive first-look at Julie Murphy & Sierra Simone's Fundamentals of Being a Good Girl , which is set to be released on January 13, 2026. The book follows recent law school grad and new nanny Maddie as she finds out that the guy she is nannying for is none other than the guy that she had major sparks with just day before. So what's

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