Kaley Cuoco marked a very special occasion with her husband Karl Cook this week – their third wedding anniversary!The Flight Attendant star looked gorgeous rocking a plunging black dress on the streets of New York City, in a sweet throwback photo alongside her spouse.LOOK: Kaley Cuoco's $12million mansion with husband Karl is off the chartsIn the black and white image, Kaley threw up peace signs as she put on an animated display next to Karl, who looked dapper in a checked blazer and