"Do you feel like you have those two women running around inside you?" Barrymore asked, to which Heigl replied: "I do feel that way. I feel like I can present as Katherine when I need to, but most of the time I am just Katie."
In the meantime, you should watch Katherine's — sorry, Katie's — new show on Netflix, Firefly Lane. I'm already almost finished with the first season. It's a doozy!