Hallie Parker is a fictional character from the 1998 Disney film, The Parent Trap. She is portrayed by actress Lindsay Lohan and is one of two identical twins who were separated at birth. Hallie is raised in Napa Valley, California, and is known for her adventurous spirit and strong personality. In the film, Hallie discovers her twin sister, Annie James, who was raised in London. The two girls decide to switch places to reunite their estranged parents, Nick Parker and Elizabeth James. Their journey leads to comedic situations and heartfelt moments as they work to bring their family back together.