Caught In The Act: Marc Anthony Eyes Jennifer Lopez Empty Wedding Ring Finger

Jennifer Lopez got in a classic post-divorce jab on Marc Anthony -- flaunting her now wedding-ring-free left hand in her ex's face ... as they sat inches apart.J.Lo and Marc reunited briefly yesterday at a Pasadena news conference to promote their upcoming talent search TV show for Univision. The former couple shared a stage and answered a few questions ... but only about the show.We know it was probably unintentional, but Marc is definitely checking out that hand. No apparent hard feelings though -- as they even held hands and hugged for promotional photos. It's not just politics that makes strange bedfellows I guess!