Jessica Lange plans to exit FX's American Horror Story after the show's fourth season.

The actress has starred on three seasons of the Ryan Murphy-created drama, which has seen her win one Golden Globe and one Emmy award.

Lange currently stars as a New Orleans witch in American Horror Story: Coven, alongside Angela Bassett and Kathy Bates, as well as series regulars Evan Peters, Taissa Farmiga and Sarah Paulson.

In a recent interview, Lange told BuzzFeed of her involvement with the show: "I'll do one more season... That'll be it."

However, Murphy seems optimistic that she will stay on the show longer, telling The Hollywood Reporter: "Every year, she says, 'OK, that's my last one'. But she's already committed to the fourth series. I can see American Horror Story going 10 years, 12 years, 15 years.

"I think it's limitless because it re-energises every year, and I would love for Jessica Lange to be part of it every year."