Rep: Jessica Lange and Sam Shepard Have Separated

 Jamie McCarthy/

American Horror Story star Jessica Lange is no longer dating her longtime partner, playwright and actor Sam Shepard, the actress' rep confirms to Us Weekly.

PHOTOS: Biggest breakups of 2011

Read article

"They separated a little less than two years ago," a source adds of the Hollywood power couple.

Dating since 1982, Lange and Shepard have two children together: daughter Hannah, 26, and son Samuel, 24.

PHOTOS: Stars who haven't wed -- yet!

Read article

Prior to her relationship with Shepard, 68, Lange was married to photographer Francisco "Paco" Grande from 1970 to 1981. The same year they split, Langer welcomed a daughter, Alexandra, with dancer and actor Mikhail Baryshnikov.

PHOTOS: Are these stars better off single?

Lange, a two-time Oscar winner, was recently nominated for a Golden Globe and Screen Actors Guild award. She next appears in February's The Vow (opposite Rachel McAdams and Channing Tatum).

Tell Us: Are you sad to see Jessica Lange and Sam Shepard split?

For access to all our exclusive celebrity videos and interviews – Subscribe on YouTube!