Jennifer Lopez as Barbarella

JLo paid homage to her Monster-in-Law co-star Jane Fonda in an outfit inspired by the iconic 1968 movie Barbarella.

The Kiss of the Spider Woman posed on Instagram in an outfit complete with blood splatters, arm gauntlets, stun gun, silver boots, and a hairstyle befitting the era.

She captioned her post: "BARBARELLA... I dressed up as my Monster-in-Law for Halloween... the original SPACE ANGEL Love you @JaneFonda."