Robin Wright Penn and Sean Penn by Eric Charbonneau/WireImage.com Robin Wright Penn and Sean Penn by Eric Charbonneau/WireImage.com

Sean Penn (whose Into the Wild is garnering much awards-season buzz) and Robin "Kelly Capwell" Wright "Buttercup" Penn - who you had to sense were two of Hollywood's higher-maintenance stars - are divorcing after 11 years of marriage, a spokesperson for the actors tells People.

The couple have two children together, Hopper Jack, 14, and Dylan Frances, 16.