A mystery celebrity will be coming out of the closet on the cover of People on May 5 and lots of people are talking about who it's going to be. Well, it's time to toss out names and respective odds.

Twins Charlotte and Samantha Ronson turn 32 today. David Duchovny is turning 49. Charlize Theron is 34. Author and radio personality Garrison Keillor is 67. Conservative political commentator Alan Keyes turns 59. Wayne Knight, the actor best known for playing Newman on Seinfeld, is turning 54. And Jimmy Wales, the co-founder of Wikipedia, is 43 today—at least according to his Wikipedia page. A handful of weekend birthdays—including that of Michael Kors, Chris Cuomo and Dustin Hoffman—follow below.

Giorgio Armani celebrated the opening of his new Fifth Avenue flagship last night with a party at the store. The designer was accompanied by his niece Roberta Armani; guests on hand included Leonardo DiCaprio (left), Carine Roitfeld, Victoria Beckham, Martin Scorsese, Michael Bloomberg, Caroline Kennedy, Joel Klein, Cindi Leive, Fern Mallis, Andre Leon Talley, Ricky Martin, Rachel Zoe, Nina Garcia, John Mayer, Mario Testino, Josh Hartnett, Liam Neeson, Richard Meier, Alicia Keys, Chace Crawford, Milla Jovovich, Thom Browne, Kevin Liles, Molly Sims, Mira Sorvino and Christopher Backus, Sally Singer, David Hershkovits, Jim Moore, Hal Rubenstein, Patrick McCarthy, Emile Hirsch, Natalia Vodianova, Zani Gugelmann, Kate Lanphear, Horacio Silva, January Jones, Elsa Pataky, Zoe Saldana, Solange Knowles, Marcus Schenkenberg, and Olivia Palermo. [PMc, Wireimage, Vogue UK, FWD, NYM]

12/15 — JC CHASEZ just walked in to the Equinox on The Strip in West Hollywood wearing a powder blue track suit that MUST be an early Christmas gift from Lance Bass. Otherwise, why? [Anyone? Hollywood PrivacyWatch is written by and for Defamer readers; send your sightings to tips@defamer.com.]

Celebrating birthdays today: Real estate broker Deborah Grubman—who also happens to be the wife of Allen and stepmom of Lizzie—turns 56. Party planner extraordinaire David Monn is 45. Designer John Varvatos turns 54. Dustin Hoffman is 71. Two former boy band-ers, Drew Lachey and JC Chasez, both turn 32 today. Tennis star Roger Federer is 27. And Robin Quivers is 56. Saturday is the big day for Chris Cuomo (left) who will be celebrating his 37th. Michael Kors will be turning 49. Allure's Linda Wells will be 50. And real estate broker Larry Kaiser and designer Peter Marino will be a year older on Saturday, too. On Sunday: Fashion icon Betsey Johnson will be 66, actress Angie Harmon will be 36, and real estate developer Harry Macklowe will turn 71.

PrivacyWatch celebrity sightings are submitted by our millions of Defamer operatives. We'd like to remind you that this feature is powered by you, so if you want to see more installments of PrivacyWatch, then all you've got to do is to send us your sightings. Submit yours to tips[AT]defamer.com (please put "sighting" or "PrivacyWatch" in the subject line so we don't lose them) and tell everyone about the time you saw Adrian Grenier getting ready to Diving Bell the Butterfly out of "some model looking chick."

PrivacyWatch celebrity sightings are submitted by the loyal readers of Defamer. We'd like to remind you that this feature is powered by you, so if you want to see more installments of PrivacyWatch, then all you've got to do is to send us your sightings. Submit yours to tips[AT]defamer.com (please put "sighting" or "PrivacyWatch" in the subject line so we don't lose them) and tell everyone about the time you saw Eli Roth sucking face with a teenager when he should've been watching Schindler's List The Happening.

When a girl's starting to doubt her sex appeal, after a foray into acting that has thus far earned her parts as a back brace-wearing nerd and the part of "Smoking Girl" in something called Whore, there is no better way to regain confidence and prove just how fine you are than nailing a gay actor (allegedly). And that's just the challenge Rumer Willis set up for herself during a recent night out. According to the NY Post, the rising starlet and failed auditonee of Lindsay Lohan's lesbian love lottery spotted boy band groupie Chace Crawford at a birthday party and tried every boy toy magnet trick she could think of in an extensively planned and bitterly fought campaign to pull off the rarely accomplished task of getting him to switch teams.

Oh poor JC Chasez. The complete nobody who has never done anything noteworthy except sing back-up for Justin Timberlake, says that the gay rumors, about him and Gossip Girl queen Chace Crawford, are "annoying". Leave him alone! He's allowed to have friends! Who he takes to Elton John parties and for poolside cabana romps! Being called gay is annoying! Though, JC, I'm curious as to what's more annoying: silly gay rumors (that you deal with obnoxiously), or dejectedly waiting in line at a Burbank unemployment office?

As rumors that JC Chasez and Gossip Girl star Chace Crawford are doing the naked pretzel reach a fever pitch—certainly prodded along by our own high-level informant's eyewitness account of the two sharing a poolside cabana at the Roosevelt—the second-most-talented NSYNC member called into Kiss FM 104.7 today to deny, deny, deny. (It happens about mid-way through this audio.) The Hollyscoop girls helpfully transcribed the exchange, which we excerpt below:

Chace Crawford, the Gossip Girl star so pretty that one bat of his lashes is enough to instantly knock crowds of his tweenage fanbase clear unconscious, has been linked quite a bit lately to former NSYNC member JC Chasez. Not even a suspiciously timed and worded Page Six item describing the actor as being "surrounded by women" seemed to quell the rumors regarding these frequent bunk buddies. Now, via cameraphone-equipped operative, we bring you this latest addition to the Defamer Citizen Paparazzi files. It's an eyewitness account of what Chase and J.C. (can we just give them a celebrity couple's name already? Chésee it is!) were up to over this unseasonably warm L.A. weekend:

• These days, everyone keeps methadone in the fridge! [TMZ]