Bartusiak's longtime friend Abigail Breslin confirmed reports of the actress' death. "One of my very good friends and someone who was like a sister to me, Skye McCole Bartusiak passed away today. So devastated," the Little Miss Sunshine actress wrote on Twitter.
Bartusiak was found dead in her Texas home, according to TMZ, which first reported the news. The cause of death has not been determined.