Katherine "Katie" Silverman (born February 8, 2005) is an American actress and lead singer/songwriter in the indie pop duo band Queen Anne. Known at a young age for portraying the young Jacqueline Bouvier in Michael Wilson's production of Grey Gardens at the Ahmanson Theatre in Los Angeles, California. she has also appeared in multiple feature films and has had recurring roles as Young Jess on Fox's New Girl, Young Penny on ABC's Happy Endings, and Stevie on Hulu's PEN15. (Via Wikipedia)