Diaz was raised along with her elder sister in New York City’s lower east side by parents of Puerto Rican descent. She became interested in acting at the Henry Street Settlement and subsequently attended the Professional Performing Arts School in Manhattan.
She recently completed a degree in Film Production at New York University’s Tisch School of the Arts, and has made numerous off-Broadway and workshop appearances including Medea at the Bullet Space, the Hip Hop Theater Festival at P.S. 122, and the New York City Fringe Festival.
She started her film career with a supporting role in Tom DiCillo’s Double Whammy (2001) and later landed roles in Jim McKay and Hannah Weyer’s From an Objective Point of View and Peter Sollett’s Raising Victor Vargas (both 2002). Television work at this time included an episode of Law & Order and a pilot for Queens Supreme (both 2003).