ABIGAIL BRESLIN brings 'Kit Kittredge: An American Girl' to the big screen this summer, and ET was there for her big Hollywood premiere!

"It's pretty cool," Abigail said of the turnout. "I'm excited to see all the girls, and welcome the boys who come too!"

Based on the hugely popular American Girl book series, 'Kit Kittredge: An American Girl' stars Abigail as a resourceful young girl living during the Great Depression whose bravery, compassion and determination help her solve a mystery that saves her family's home.

WILL SMITH and JADA PINKETT SMITH were there with their little girl WILLOW, who also stars in the movie, as well as CHRIS O'DONNELL, JOAN CUSACK, JULIA ORMOND, GLENNE HEADLY, JANE KRAKOWSKI, WALLACE SHAWN and STANLEY TUCCI.

Dad of five Chris O'Donnell joked, "I think my American Express has been hit pretty hard at that store over the years, so this is pretty familiar territory for me."

The movie opens in select theaters June 20 (for a 10-day exclusive engagement in L.A., New York, Chicago, Dallas and Atlanta) before opening nationwide on July 2.