Carrie Karasyov & Jill Kargman are best buds who met at their all-girls private high school in New York City. They have cowritten two novels for adults, The Right Address and Wolves in Chic Clothing, and two novels for teens, Bittersweet Sixteen and Summer Intern. Carrie is also the author of The Infidelity Pact, and Jill is the author of Momzillas.