• Cynthia Nixon and longtime girlfriend Christine Marinoni have gotten engaged. The couple announced the news at the Love, Peace and Marriage Equality rally over the weekend. [OK!, ET]
• Mariah Carey reportedly threw a fit in Cannes on Friday evening when the director of her new movie had the audacity to show up late to the premiere, thus denying her precious time on the red carpet. [NYDN]
• Also in Cannes: Giuseppe Cipriani was seen making out with Tara Reid; and Kirsten Dunst missed the party she was supposed to be hosting because she missed her flight. [NYDN, Mirror]
• Kelly Bensimon is telling friends she regrets joining the Real Housewives cast since appearing on the show has "ruined her socially." [P6]
• Brooke Shields says her mother was checked out of her nursing home last week by a National Enquirer reporter looking for a scoop. [People]

Marc Jacobs has several reasons to celebrate today. In addition to his recent engagement, he'll also be blowing out 46 candles on his birthday cake today. Others marking the big day: NBC chief Jeff Zucker is 44. Hugh Hefner turns 83. Cynthia Nixon is 43. Leighton Meester is turning 23. Albert Hammond Jr. is turning 29. Joe Scarborough is 46. Porn queen Jenna Jameson is 35. Dennis Quaid turns 55. Fashion designer Martin Margiela is 52. Restaurateur Taavo Somer turns 36. Twilight actress Kristen Stewart is 19. Jesse McCartney turns 22. America's Next Top Model winner Yoanna House is 29. And former model-turned-ANTM judge Paulina Porizkova is 44.

Andrew Saffir's Cinema Society hosted a screening of The Mysteries of Pittsburgh last night at the Landmark Sunshine Theater. Guests at the screening included the film's stars Sienna Miller and Peter Sarsgaard (left), along with Maggie Gyllenhaal, Anna Wintour, Russell Simmons and Julie Henderson, Gilles Bensimon, Rachel Roy, Amy Sacco, Rachel Zoe, Beth Ostrosky, Olivia Palermo and Johannes Huebl, Jessica Joffe, Zoe Kravitz, Stefano Tonchi, Marina Rust Connor, Jennifer Creel, Richard Johnson and Sessa von Richchofen, Carlos Souza, Marcus Schenkenberg, Rosanna Scotto, Emma Roberts, Brittny Gastineau, Irina Pantaeva, Kiera Chaplin, Lisa Anastos, Jackie Astier, Kim Heirston, Nur Khan, Gilles Mendel, Bobby Kennedy III, Kelly Killoren Bensimon, Chris Diamantopoulos, and Olympic fencers Tim Morehouse and Jason Rogers. [PMc, Wireimage, VF, Paper, FWD]

Here's what happened in theatre this week. It was sort of a depressing seven days. Fitting for the times, I suppose.

New Line Cinema, the studio everyone thought Time Warner had killed specifically to prevent the possibility of a Sex and the City sequel, is coming out with a Sex and the City sequel.

• Hope you're ready to go through it all over again: Sarah Jessica Parker, Kim Cattrall, Cynthia Nixon, and Kristin Davis have all agreed to participate in a Sex and the City movie sequel. [Us]
• Graydon Carter should really consider writing a nutrition cookbook: It seems Madonna's secret to eternal youth is the salmon with lentils at the Waverly Inn. [L&S]
• Still more drama from the inaugural festivities in DC earlier this week: Chris Matthews got pissed about having to wait on line, Sharon Stone was annoyed she had to co-host a segment on CNN with D.L. Hughley, and Halle Berry went into panic mode after her dress got caught in an escalator. [P6]
• Gwyneth Paltrow was spotted on a flight doing yoga in the aisle recently. Is this becoming a trend? [Star]
• Charges against Mathias Guerrand-Hermès have been dropped. [NYDN]

♦ Haven't seen Giuseppe Cipriani around town lately? There may be a reason for that: He's believed to be outside the U.S. since he's on probation and because Andrew Cuomo is investigating how the family managed to keep its liquor license earlier this year. [P6]
♦ Angelina Jolie has been undergoing secret fertility treatments in the hopes of becoming pregnant with twins within the next two years. At least that's what Star says. [Star]
♦ Everyone on Gossip Girl may be hooking up with each other, but at least one relationship isn't going so strong: Blake Lively was spotted making out with a guy who was not Penn Badgley. [E!, P6]
♦ Leonardo DiCaprio lost his wallet at Rolf's on Third Avenue, and Tom Cruise lost his Blackberry somewhere in Toronto. [P6, P6]

Dylan Lauren celebrated the re-launch of Dylan's Candy Bar on Monday night with a bash at her Third Avenue store. In addition to siblings Andrew and David and mom Ricky, guests included Woody Allen and Soon-Yi (with their kids), Ivanka Trump, Donald Trump Jr. and wife Vanessa Trump, Lauren Bush, Dan Abrams, Olivia Palermo, Katie Lee Joel, Rachel Roy, Fabiola Beracasa, Stacey Bendet, Eric Villency, Jamee Gregory, Bettina Zilkha, Amy Sacco, Thom Filicia, Dori Cooperman, Ingrid Sischy, Dave Zinczenko, Kelly Killoren Bensimon, Karen Duffy, Kira Plastinina, Jason Biggs, Tyson Beckford, and fraudster Tatiana Boncompagni. [PMc, NYO, Wireimage, GoaG]

Katie Holmes and Suri Cruise boarding a helicopter ... Ed Westwick and Blake Lively shooting a Gossip Girl scene in Brooklyn Heights ... Lipstick Jungle star Paul Blackthorne riding a bike in the Village ... Kristen Johnson walking through the meatpacking district ... Al Pacino eating lunch in the Village ... Tim Robbins playing roller hockey in Greenwich Village ... Cynthia Nixon chatting on her cell phone in the Hamptons ... Sam Waterston posing with his son James outside a Broadway theater ... Liv Tyler leaving her apartment in the West Village ... and Keri Russell taking a jog in the rain.

• Meet the heavyweight political donors who live at River House.

Voicemail at the apartment of Cynthia Nixon and Christine Marinoni.

• Hockey star and Vogue intern Sean Avery showed up to a
  concert "dressed head to toe in black with a black newsboy cap... he
  looked like he was straight out of a 1998 J.Lo video." [P6]

• A judge has decided to keep Christie Brinkley and Peter Cook's divorce case open, and Diana Bianchi, the teenager Peter cheated on Christie with, says she's willing to testify if need be. [NYDN]

1) At the Harold Pratt House, the New Yorkers For Children Fall Gala was previewed with a Tuesday night gathering of Campion Platt, Andre Leon Talley, Jeffrey Kalinsky, Beth Rudin DeWoody, Dayssi Olarte De Kanavos, Douglas Hannant, Kate Schelter, Katie Lee Joel, Derek Blasberg, Debbie Bancroft, Joy Bryant, Daniel Benedict and Andrew Saffir, Annelise Peterson, Jamee Gregory, Fern Mallis, Jennifer Creel, Fabiola Beracasa, Oscar De La Renta, Thakoon Panichgul, Tom Florio, Zac Posen, Zani Gugelmann, Lauren Santo Domingo, Phillip Lim, Heather Mnuchin, and Peter Som. [Guest of a Guest]

Sex and the City: The Movie—already a sacred Women's Studies text, pored over on campuses throughout the country as the prototypical example of early-21st Century "shoe-me" feminism—has found itself on the receiving end of some of the most petty and vicious critiques of any movie in ages. There was Rex Reed's NY Observer review, in which Reed spent the first 90 words obsessing over Sarah Jessica Parker's chin growth, and likened to the cast to "plow mules in lipstick," and Anthony Lane's subtler ("...thudding closeups of her slurping through a cocktail straw or swallowing a mouthful of guacamole..."), but no less nauseated, take on the film's middle-aged stars in the New Yorker. Now, approaching its fourth week of release, the hits keeps coming. From Page Six:

• More dirt today about Anne Hathaway's breakup with Raffaello Follieri: She's living at the Gramercy Park Hotel while he's staying in a rental in Trump Tower. Evidence that this might be a PR stunt for her new movie: the exes may have met up for dinner at Cipriani last night. [Page Six]

So the gays are officially marrying each other in California. And there are a few celebrities sprinkled in among the hordes of couples now rushing to the altar: George "Mr. Sulu" Takei of Star Trek married his partner Brat Altman today, and Ellen DeGeneres says she plans to marry her longtime girlfriend, Portia De Rossi, later this month. But what about here in New York? Which locals are going to take advantage of David Paterson's recent decision to recognize same-sex marriages performed elsewhere and fly out West to pick up a marriage license of their own?

[Well-respected, Tony award-winning theatre actress (and, oh, "Sex and the City" star) Cynthia Nixon outside the Jimmy Kimmel show in Los Angeles yesterday; image via Splash]

What would a Sex And The City movie premiere be without bouts of drama worthy of the show itself? While last night's premiere in New York looked glamorous on camera, on the scene it was another story entirely. From a controversial remark made by the franchise’s token villainness to fashion mishaps to thousands of ticketless die-hard fans ending up in tears, the scene outside Radio City Music Hall last night was chaotic and Cosmo-drenched. And that was just the crowd! As for the stars of the film, there were signs that sex-despising Sarah Jessica Parker's co-stars weren't entirely pleased to pose in front of the movie's poster (you know, the one that they don't even appear on). All the scandals and controversy, plus the highs and lows of the cast's fashion choices, after the jump.

• Was she depressed or just drunk? Months after Kirsten Dunst returned from rehab, she's now telling people she never suffered from alcoholism at all, and instead checked in to treat depression. Whatever you say. [Us Weekly]