The Cutting Room
"I'm tired," said Michael Roberts as he made a mock snoozing gesture at his book party Wednesday night at Bergdorf Goodman. If the author was fatigued, it was for good reason: Over 200 autograph-seeking admirers showed up to celebrate the publication of his new tome, The Snippy World of New Yorker Fashion Artist Michael Roberts. Among them were Vogue's André Leon Talley and Hamish Bowles, both of whom enjoyed playing with the oversize red scissors stationed as props for the evening. Ever the romantic Frenchman, Gilles Bensimon caught the attention of Roberts by issuing soft kisses to the nape of his neck. "Oh, it's you," laughed the author as he reached to sign another copy.

The Orchid Thief
To honor its new jewelry launch, the Caresse d'Orchidées collection, Cartier hosted a party for roughly 1,000 people, including the honorees of this year's CFDA/Vogue Fashion Fund, who had been the subject of a photo shoot earlier that day at the Gotham Hall locale. The plush red interior of the venue, specifically redesigned for the occasion, was created to suggest the interior of an orchid, and Brazilian post-punk and jazz combo Nouvelle Vague maintained a mellow vibe as models milled about wearing the new line. After ogling the ice, actresses Rosario Dawson, Kirsten Dunst, Rachel Weisz, and Melissa George perched on a veranda overlooking the main floor, alongside designing duos Proenza Schouler, Project Alabama, and Costello Tagliapietra.

Proof Positive
One of the best parties of the week came thanks to Andrew Saffir and his newly formed Cinema Society, which along with Christian Dior, hosted a screening of the new Gwyneth Paltrow movie, Proof. Joining Mrs. Chris Martin was a who's who of musical heavy hitters, ranging from David Bowie and Roger Waters to Beyoncé Knowles and Jay-Z. Fellow thespians included Lauren Bacall, modelizer of the moment Jeremy Piven, and Michael Imperoli, on a break from filming the sixth season of The Sopranos. "I don't know much about Dior to be honest," said Imperioli. "I wear more Italian stuff than anything else." Which was probably appropriate, since the evening, held in a $5.3 million penthouse in Richard Meier's 165 Charles St. building, benefited Martin Scorsese's Film Foundation.

Mercury Rising
To celebrate their spring show and the launch of the new fragrance Euphoria, execs at Calvin Klein transformed a raw space in Chelsea into an Ibiza-worthy nightclub, with purple neon illuminating over 300 matching Vanda orchids hanging from the ceiling, and catering courtesy of seafood restaurant Lure Fishbar. Revelers, including Claire Danes, Ashley Olsen, and Stone Temple Pilots frontman Scott Weiland ("I have to find my wife," was all he would tell us), navigated the crowded—and steamily hot—quarters. Designer Francisco Costa admitted he was "exhausted but in a good place," describing his well-received collection as "very architectural and Bauhaus-y, but playful. The girl who wears it isn't so available, she's more defined." Calvin model and spokeswoman Natalia Vodianova concurred: "I think he gets better with every collection." Upstairs in an unofficial VIP area (shades of the Marc Jacobs party—could this be a trend?), an exuberant Lara Flynn Boyle gyrated rather manically in a frock by Jennifer Nicholson, the daughter of Flynn Boyle's ex-boyfriend Jack. "I just got into town," said the tiny dancer, explaining that she had come to New York for Nicholson's show. Wait a second: Wasn't that last Saturday?

Zac Attack
"I love Zac," said Nicky Hilton. (What else was she going to say, having just finished a strenuous table-dancing session with the young designer and Stella Schnabel?) "I went to his first collection at Gen Art, like, four years ago." With a fleet of Jaguars, courtesy of one of Posen's sponsors, stationed outside, the multitasking designer and his posse took over the penthouse loft of the Soho Grand Hotel. On hand were Kerry Washington, Bijou Phillips, Ashanti, and Posen's business partner Diddy. Speaking of partnerships, San Francisco mayor Gavin Newsom showed up with… fashion-loving wife Kimberly, with whom he is in the process of getting a divorce. Hmmm, perhaps, as Posen put it in describing his collection, they just "wanted to be upbeat and in the moment." And what made him choose Sardinia as his inspiration? "I needed something fresh. New York depresses me." Yeah, a Jaguar will do that to you.

Birds of a Feather
A flock of celebrities could be observed in their natural habitat Thursday evening at the Staley-Wise Gallery for the launch of Amanda de Cadenet's book Rare Birds. As Heather Graham sipped Champagne and circuited the room, a scruffy-bearded Keanu Reeves adopted a Rodin-esque pose, scratching his chin and looking thoughtfully at prints of such rare examples of the species as Marc Jacobs, Amber Valletta, Beck, and Drew Barrymore. "I photograph people just exactly as I see them," said de Cadenet. "Sometimes, they're pretty surprised at what I see."

Get Me Security!
Later that night, Alicia Keys used her venerated vocal chords not to sing, but to make a statement at the kickoff party for the Black Ball, a benefit for Keep a Child Alive, held at Cain. "We can change the course of AIDS history, and we can't afford not to get involved," she said. "Because we're somebody, we need to do something important." Sipping on martinis and mingling on the club's dark dance floor and plush banquettes were somebodies including Tinsley Mortimer, Denise Rich, Nicole Miller, Iman, Alan Cumming, and event chairs Douglas Hannant and Fred Anderson. And while charity and benevolence were clearly important to Mario Cantone that evening, he did have other things on his mind. "I'm so in love with Alicia Keys' security guard over there," he said. "I could die."

—Sarah Cristobal with Tracey Lomrantz