Comrade in arm

JESSICA Chastain is humored by all the recent fuss over her humerus. The “Interstellar” star laughingly confessed that she “never, never” thought her arm would go viral after her “Scenes From a Marriage” co-star Oscar Isaac electrified the Internet recently by planting a kiss on her bicep on the red carpet at the Venice Film Festival. “My left arm is a bit jealous of my right!” she joked of the arm peck seen around the world — even prompting her to tweet a photo of Gomez Addams lovingly kissing Morticia Addams’ arm, reports The Post’s Nicki Gostin. Chastain’s other new film is “The Eyes of Tammy Faye.”