Twins by Marcy Dermansky

On their thirteenth birthday, the sisters get tattoos to prove their love is stronger than DNA, but instead, they continue to grow apart. When Chloe befriends Lisa Markman, an aspiring model and the daughter of a famous basketball player, the careful, strained peace between the sisters erupts into a violent climax.
Over the course of five years, the twins survive heartbreak, unhappy Hawaiian vacations, parental neglect, eating disorders, pill abuse, and the first painful explorations of love and sex. As they try to keep their hold in the ever-confusing world they inhabit, both Chloe and Sue reach out to new mentors who help them understand the complex connection they have to the world, and to each other.
Surrounded by an eclectic cast of characters, including the selfish Japanese sculptor Yumiko, a young Indian writer named Smita, and former Knicks player Rodney Markman, the twin sisters attempt to overcome apathy and despair to redeem each other.

At times funny, bitter, and affecting, Twins introduces two new suburban heroines on the verge, and a talented new author to watch.

Marcy Dermansky is a MacDowell Fellow and the winner of the 2002 Smallmouth Press Andre Dubus Novella Award and the 1999 Story magazine's Carson McCullers short story prize. Her stories have been published in numerous literary journals, including McSweeney's, Alaska Quarterly Review, and Indiana Review. Dermansky is a film critic for About.com and lives in Astoria, New York.