Ain't no party like a Gatsby party.

Great Giggling Gatsbys! After taking a hit for over-romanticizing the gaudy decadence of the roaring twenties in hist latest film (and subsequent press tour), director Baz Luhrmann spoke to The Observer at Lamb's Club Tuesday night during The Cinema Society, Brooks Brothers and Town & Country's after party for The Great Gatsby. Apparently, we should just all chill out and not think so hard about the implications of reveling in the excesses of high society, despite the film's moral statement against such extravagance.

"Sometimes a party is just a party," said the Australian director, co-opting the famous Freudian-attributed quote. Mr. Luhrmann had spent the night prior attending the much more oblivious, irony-laced Met Gala.

Whether or not he was including that night's function into his analysis, or merely talking about the bacchanals provided in the 3-D film is something we were left wondering: The director had flitted off to a new subject before we had time to say "We love Moulin Rouge!"

It should be noted that the not all attendees had the same hangups that we did about living in the moment: Lady Gaga showed up late to the screening, and according to at least one attendee, was carrying a six-pack of beer in her posse.

Marion Cotillard chatting away.

Just when we were sick and tired of cinema screenings and movie premiere parties (Hello nomination-baiting season!), The Cinema Society alongside Dior and Vanity Fair hosted one of its best shindigs yet, at the legendary Indochine restaurant following a showing of the Rust and Bone, Jacques Audiard’s 2012 French-Belgian film, which stars Marion Cotillard and dizzyingly sexy Matthias Schoenaerts.

“I’m gonna need eight glasses of Champagne to lift myself up from that one!” one power publicist bellowed to The Observer over the roaring crowd.

“But Marion Cotillard was just amazing!”

This writer unfortunately missed the screening in order to support wounded U.S. servicemen and women uptown for Stand Up For Heroes event, which featured performances by John Mayer, Roger Waters and Bruce Springsteen.

We were hoping for a sighting and perhaps to bavarder with the Oscar-winner.

"Marion had to immediately catch an international flight," one social stalwart dutifully informed us. Of course she had plenty of time to pose for the cameras in her Dior couture, flashing her wondrous baby-bump.

Those that did turn out for the Indochine post-bash made the night memorable. Mischievous attendees included Harley Vieira Newton, Jean-Marc Houmard, Katie Lee, Nan Bush and Bruce Weber, Stefano Tonchi, the mouthy Amy Sacco, Isiah Whitlock and Donna D'Cruz, who off-duty on the DJ gig for the evening.

“I think it’s the food!’ suggested a male model, whose name escaped us.

“These mushroom things and the filet mignon!” he raved between bites.

We schmoozed with model Johannes Huebl and admired Ellen von Unwerth dancing skills. An attempt to question Emma Watson about the premise of the film resulted in a chic pout; her smart phone was of more interest.

The film, which takes place in Antibes, we were told, follows a young man who develops a bond with a whale trainer and traces how their relationship intensifies after a tragic accident. It won critical acclaim at Cannes and the BFI Film Festival. So we shall see how it plays with American audiences. It is en Français.

We got a few words with the Belgian star, Matthias Schoenaerts, but most of it was in Flemish… “I am very excited about the film,” was about all our infantile Nederland skills could reward us.

Nonetheless, the night was about celebration and good vibes. Signature Belvedere cocktails like the Rust and Bone mojitos kept conversation lively and bodies loose until well after midnight.

We told the host of evening and The Cinema Society founder, Andrew Saffir that this was our favorite fête of his thus far. He was unfazed and just smiled politely. With that, we were off to Norwood to continue our foolish, but fabulous escapades.

Ms. Murdoch, at her Cinema Society screening (Getty Images)

Wendi Deng Murdoch, who made Tuesday morning by slapping her husband’s assailant at the News Corporation hearings in London, hasn’t let her family legal drama affect her unduly. Last Wednesday, she attended a Cinema Society screening of the film she produced, Snow Flower and the Secret Fan, with guests including Nicole Kidman (the Australian pal of Mr. Murdoch whom former Page Six contributor Jared Paul Stern recently alleged “had a free pass” from News Corporation’s gossips), Mayor Michael Bloomberg and Harvey Weinstein. (Disclosure: Ivanka Trump Jewelry, an advertiser in The Observer, was the event’s sponsor.) She also attended a Saturday screening of the film in Southampton, along with Barbara Walters and Rudy Giuliani.

Cinema Society founder Andrew Saffir was distraught over Ms. Murdoch’s crisis, though he said it was never discussed while planning the event. “She’s been working on the film, as you know, for years. It’s so unfortunate that this came about when she was about to have her moment in the sun.”

ddaddario@observer.com :: @DPD_