The 78th Venice International Film Festival kicked off in Italy on Sept. 1, with stars from all over the world gathering for the event. Swipe to see Hollywood's finest hit the red carpet. ➡ Oscar Issac and Jessica Chastain stole the show with a viral clip of their chemistry on full display. Chastain, wearing a sparkling red gown, and Isaac, in a classic black tux, gazed into each other’s eyes, embraced and shared an eyebrow-raising kiss. But things really took off when Isaac smooched the inside of Chastain’s arm, an intimate moment captured in a sexy, slow-motion clip that’s owning social media Comparisons to Gomez and Morticia Addams flew, and Chastain playfully responded on Sunday by tweeting a black-and-white image of “The Addams Family” couple similarly engaged. “Sept 12th,” she wrote, the date “Scenes From a Marriage” debuts on HBO and HBO Max. 📸 Vittorio Zunino Celotto (@gettyimages), Domenico Stinellis (@apnews), Filippo Monteforte (@gettyimages), Pascal Le Segretain (@gettyimages)