“Sesame Street,” Neff Headwear, and The Seventh Letter teamed up to bring Elmo, Big Bird, Cookie Monster and the rest of your favorite characters to a street art exhibit at Known Gallery in Los Angeles. Proceeds from the art will benefit the City of Hope Pediatrics Department.

Actresses Amy Smart, Laura Prepon and Emmanuelle Chriqui talked to “Extra” about their favorite “Sesame Street” characters and why the event was so important.