• Madonna and Alex Rodriguez had a big secret dinner at Dos Caminos Third Avenue in New York. They arrived half an hour apart, sat in the back at a quiet, "alcove-like" table and left by separate exits. Then they denied the Mexican food rendezvous to the press, since Rodriguez's soon-to-be-ex-wife has the crazy idea Madonna sneaks around with A-Rod . But Us Weekly and Page Six each has a source who saw the dinner, so it's basically confirmed.

♦ Howard Stern and Beth Ostrosky are getting married tonight. Mark Consuelos, the husband of Kelly Ripa, is presiding over the ceremony. So if you have no plans and you'd like to see this bizarre menagerie of people for yourself, please show up at Le Cirque on East 58th Street. [P6]
♦ Despite rumors, Elisabeth Hasselbeck says she has no plans to leave the View for Fox News. [E!, People]
♦ Madonna and Alex Rodriguez may have had dinner together, although both of their reps deny it. [P6]
♦ Mark Ronson and Amy Winehouse are working together on a new song. Hopefully it'll turn out better than their last attempt at a collaboration, which "ended in tears." [Mirror]

John Mayer leaving a Krav Maga session on West 22nd Street ... Sarah Jessica Parker and Caroline Kennedy making a promotional appearance at the Barnes & Nobles in Tribeca ... Alex Rodriguez having lunch outside at Bar Pitti ... Katie Holmes signing autographs outside the Schoenfeld Theatre ... Madonna and son David walking into the Kabbalah Center ... Sandra Bernhard leaving the center with her daughter hours later ... Kate Walsh and Barry Sonnenfeld outside the Letterman show ... Britney Spears heading inside Soho House ... and Jay-Z standing on the sidewalk in the West Village.

Alex Rodriguez's Trump Park condo has officially hit the market. For $14 million—or roughly twice what the slugger paid for the place—you'll get a 4,600-square-foot pad with library/den, dressing area, windowed chef's kitchen, and en-suite master bathroom. You'll have to come up with your own supply of blonde strippers, however. [Modlin Group via NYO]

Drew Barrymore walking in the West Village ... Alex Rodriguez leaving a workout at the Reebok Gym ... Spike Lee posing for photos outside a hotel ... Julianne Moore carrying a shopping bag ... Kelly Ripa and David Blaine hanging upside down in Central Park for a Live segment ... Blake Lively and Leighton Meester walking around the Gossip Girl set ... Real Housewives' Alex McCord posing on the red carpet at the Metropolitan Opera season opener ... Actor Mark Ruffalo holding hands with his wife as they cross the street ... Natasha Bedingfield and Caroline Rhea leaving ABC Studios in Midtown ... and Chris Rock and Lance Armstrong outside the David Letterman show.

♦ Martha Stewart has been busy wielding the ax. First she fired one of her show's directors; now she's cut her longtime hairstylist/makeup artist, allegedly because the staffer was spending too much on makeup and hair dye. [P6]
♦ The doctor who has been treating DJ AM and Travis Barker since their plane crash on Friday says both men should make full recoveries. Four others died in the wreck and investigators now suspect a blown tire was the cause. [People, LAT]
♦ Ron Perelman and Pat Duff are still fighting in court over their daughter Caleigh. It seem the teenager is still skipping out on those court-ordered visits with her mom. [P6]
♦ Lindsay Lohan will be a judge on the first episode of next season's Project Runway. [NYDN]
♦ Tina Fey was a big winner at the Emmys last night. You can check out a full list of winners here. [ET]

♦ It seems like sending out company-wide emails ripping your co-workers is not a good idea: Pat O'Brien has been fired from The Insider. [R&M, P6]
♦ Brandon Davis has been conning his friends out of cash, but whenever anyone tries to get the money back "he starts crying and gets them to feel bad for him." [P6]
♦ Poor Ivana Trump almost had to fly coach this week. But then someone in first class switched seats, so everything turned out okay. Phew. [P6]
♦ Heather Mills is suing her former publicist—the one who very publicly dumped her and called her a "witch"—for libel. [P6]
♦ Anne Hathaway's been crashing on her parents' couch ever since she got booted from Raffaello Follieri's duplex. [In Touch]

• Roseanne Barr is outraged that Angelina Jolie and Brad Pitt haven't endorsed Barack Obama, so she's taken them to task on her blog for being evil and vacuous, and for "trying to look as if they give a crap about humanity." [P6, RoseanneWorld]
  

• Alex Rodriguez is reportedly negotiating to buy a four-bedroom apartment in 15 Central Park West for "an incredible amount." [NYP]

Where did John Edwards and Rielle Hunter have their first romantic interlude? At the Loews Regency Hotel on Park Avenue, which happens to be one of Edwards favorite hotels in town. (We're guessing, however, that the hotel's owner, Jonathan Tisch, won't be including this little fact in the official hotel brochure in the near future.) But Edwards isn't the only married man who picked the five-star property to carry on behind his wife's back. In 1997, former football star Frank Gifford—the husband of Kathie Lee—bedded nude model Suzan Johnson in suite 521. (Gifford later claimed a tabloid had set him up.) After the jump, a few of the hotels where some of the rich and powerful have cheated on their wives, stashed their goomahs, and/or ran up a huge mini-bar bill.

• Real estate developer Christopher Jeffries, whose Millennium Partners turned the St. Moritz on Central Park South into a Ritz-Carlton with 277 rooms and 11 full-floor condos, has sold his 29th floor, 5,954-square-foot apartment in the building for $28.5 million. [Cityfile]

• Sad Tori Spelling is un-joining the 90210 spinoff because she's making like half as much as Shannen Doherty. Which is unfair because Spelling wrote a bestseller! Wait, really? (Yes. Sigh.) [Deadline Hollywood]

• Julia Stiles and her boyfriend of two years, Jonathan Cramer, have split up, which may explain why she was so rude to a group of diners at a cafe the other day. [Page Six]

• Caleigh Perelman is still refusing to talk to her mom Pat Duff, or even go on vacation with her. Now a judge is warning Ron Perelman not to interfere with their phone calls and visits. He also ordered Caleigh to undergo a psychological evaluation before the couple return to court next month. [NYDN]

• Alex Rodriguez is expected to file divorce papers of his own in a Miami court today: He's wants his prenup enforced and any charges that he cheated on wife Cynthia removed from the record. [NYDN]

• Marc Jacobs is maybe getting married! To the upmarket man, Lorenzo Matrone, in Paris. Will former rentboy and perpetual Jacobs ex Jason Preston attend Y/N??! [Gay Socialites]

Happy 42nd, Christine Quinn! Other people around town celebrating today: Iman is 53, Mets pitcher Billy Wagner is 37, and restaurateur Geoffrey Zakarian is turning 49. Celebs celebrating this weekend: Kevin Spacey will be 49, Kate Beckinsale will turn 35, Mick Jagger will celebrate his 65th, and Sandra Bullock will be 44. Misshapes' Leigh Lezark will turn 24 tomorrow. Artist Tom Sachs will turn 42. Architect Hugh Hardy will be 76. On Sunday, Alex Rodriguez will turn 33. He shares his birthday with Taxi & Limousine commisioner Matthew Daus, hedge fund manager Timothy Barakett, and artist Dash Snow.

• Diddy and Cassie are secretly engaged? That's what the highly credible Star says. The rap mogul apparently told friends during son Justin's graduation from Horace Mann last month. [Star]

• Ashley Dupre seems to have found a new married man to take her to expensive hotels and treat her to drinks from the minibar. After spending the day shopping in Midtown (left), she checked into the Gramercy Park Hotel with Thomas "TJ" Earle, who owns a New Jersey asphalt company and lives in a "McMansion" with his wife and two kids. [NYP]

We're hearing today that Madonna might not be the only entertainment interest Alex Rodriguez reportedly plans to get into: According to The Wall Street Journal (via ESPN), the Yankees slugger and bachelor-to-be inked a deal with William Morris "in an attempt to extend his brand beyond the baseball diamond." A-Rod joins Dwayne Wade, Serena Williams and Kevin Garnett among WMA's athlete clientele, an affiliation he and manager Guy Oseary are hoping will nudge him deeper into commercials, endorsements, video games, self-help literature, yoga tutorials, reality-TV dance competitions, and, most importantly, an IMDB headshot and STARmeter ranking that won't embarrass the shit out of his rumored paramour. Yes, A-Rod, we agree — it's time. (Click the image for a larger view.)