Rory has and identical twin sister. Her name is Krista Hayden Gilmore

She died. Then woke up in the life of Paris Geller- except she looks nothing like her. Blonde hair, blue eyes, flawless skin. Stunning. Intimidating. Nothing like the sharp-edged girl Rory Gilmore was meant to meet. Armed with a sarcastic wit, a too-soft heart, and the knowledge of the future she's supposed to have, she's determined to rewrite Paris's story. To be kinder. Brighter. Better. But Chilton doesn't trust a pretty face with perfect grades and it never will.

Rory Gilmore was raised to dream. Charlotte Hayden was raised to win. Two daughters, two families, two very different worlds. That's Not My Name is a story of identity, legacy, and the spaces between the lives we live and the ones we might have had.