Alicia Silverstone and Donald Faison -- who costarred with the late Brittney Murphy in the 1995 comedy Clueless -- remember her as a pleasure to work with.
"I'm so saddened to hear this news. I loved working with Brittany. She was so talented, so warm and so sweet," Silverstone said in a statement. "I always felt connected to her as we shared a very special experience in our lives together. I feel love in my heart for her-and hope she is at peace."
Murphy rose to fame when she landed the Clueless role (at the age of 15) as Silverstone's ditzy friend Tai.
Costar Faison recalled her as she was "one of the sweetest people you will ever meet.
"She had the voice of an angel and a genuine heart of gold," he said in a statement. "I'm very happy to have known and worked with such a special person. My heart goes out to all of her loved ones."