George Clooney and Stacy Keibler met up Tuesday night, continuing to crush rumors they’re headed for splitsville. Clooney was earlier seen arriving solo at a star-studded party for Ben Affleck’s Oscar-buzzed Iranian hostage drama “Argo.” But the “Ocean’s Eleven” star later dashed downtown to rendezvous with Keibler and pals Beth Ostrosky Stern, producer Grant Heslov and “Curb Your Enthusiasm” comic Richard Kind. Sources say Clooney wasn’t originally scheduled to attend the premiere, but decided last-minute to support director and star Affleck, as did A-listers Matt Damon, Michael Douglas, Glenn Close, Sting, Oliver Stone, Mike Nichols and Kate Upton. Clooney, who produced “Argo,” told us he was originally set to star in it as well , but, “I was doing ‘Ides of March’ and gave this to Ben because we were ready to shoot . . . we felt really lucky he wanted to do it, and he did better than anyone could imagine.” The Peggy Siegal Co. bash at Porter House served as an unofficial kick-off to Oscar season as the Academy of Motion Picture Arts and Sciences hosted a separate party next door for new members which drew Daniel Craig, Rachel Weisz, Steven Soderbergh, Michael Moore and Richard Gere. Craig and Weisz “didn’t leave each other’s side all night,” a spy said. “They held hands, chatting with everyone who approached them. Daniel even grabbed her a few times.” Gere, meanwhile, “only hung with the boys,” a spy said, after the “Arbitrage” star had enraged an East Hampton husband Saturday night for whispering in his babelicious blond wife’s ear. Also at the “Argo” bash were network news heavies Brian Williams, Barbara Walters, Cynthia McFadden, Hoda Kotb and Christiane Amanpour, as well as Neil Simon, Barry Levinson and Cyrus Vance Jr. The movie screens in DC, tonight, hosted by Canadian ambassador Gary Doer.