Cameron Diaz leaving a nail appointment ... Jennifer Aniston with Alec Baldwin on the set of 30 Rock ... Liv Tyler dressed up for a party sponsored by Samsung ... Miley Cyrus walking around Midtown ... Adrian Grenier with his grandmother at the Entourage season premiere party ... Kim Cattrall sitting with with Star Jones at the US Open ... Naomi Watts with her baby on Lafayette Street ... Ed Koch standing in Midtown ... and Kelly Ripa leaving the ABC studios with a cup of coffee in hand...

• The New York fashion scene will soon be bereft when Sean Avery heads off to Texas to join the Dallas Stars. But he'll remain a ubiquitous presence on the city's billboards and buses as one of the models in Gap's fall campaign, which launches today with Liv Tyler, Ginnifer Goodwin, Georgina Chapman, Julia Restoin Roitfeld, Scott Schuman, Leigh Lezark, and Cecilia Dean. [style file/Elle]

Liv Tyler hugging a friend in SoHo... Katie Holmes on a lunch break during rehearsals for her upcoming Broadway show ... Susan Sarandon posing with her dog outside the Regis & Kelly show ... Without A Trace star Roselyn Sanchez filming a scene in the East Village ... Steve Guttenberg joking around with the paparazzi during a jog near his apartment ... Madonna getting a little help walking from a bodyguard ... Nick Carter with his sister outside their hotel in Midtown ... Taylor Momsen and Penn Badgley filming a Gossip Girl scene in Brooklyn ... and Adam Levine and a female friend headed out to dinner downtown.

Liv Tyler pushing her son in a stroller outside their West Village townhouse ... Chuck Schumer and Al Sharpton walking through Midtown ... Kelly Ripa and Mark Consuelos filming a cooking segment with their son for Live with Regis & Kelly ... Lauren Hutton wearing shorts and sneakers on a walk downtown ... Rumer Willis posing in a party dress outside the David Letterman show ... Madonna's kids, Lourdes, Rocco, and David, playing in Central Park with the nanny ... and Brody Jenner leaving a dinner at Cipriani Downtown.

1) Piaget launched its new Limelight Paris-New York Collection last night with a party at The Loft & Garden at Rockefeller Center, where Leighton Meester and Emmy Rossum (left) mingled with Liv Tyler, Maggie Gyllenhaal, Becki Newton, Mena Suvari, Joe Zee, Lisa Anastos, Lydia Fenet, Allison Aston, Adam Lippes, Roopal Patel, Zoe Kravitz, Philippe Leopold-Metzger, Geoffrey Bradfield, Gillian Miniter, Kate Schelter, Meredith Melling Burke, and Paul Sevigny. [FWD, PMc]

Looks like Liv Tyler should've asked her Armageddon co-star Ben Affleck for some tips on how to tip on the DL. While at LAX on Tuesday afternoon, Tyler attempted to slide the tip into the skycap's pocket, but the skycap mistook the gesture for something a bit more forward. Tyler explained that she was trying to tip him and didn't mean anything by it. The skycap smile and said, "You could just give it to me. No need to be a Sneaky Pete about things."

• It's two days since Knox Leon and Vivienne Marcheline Jolie-Pitt were welcomed into the world by Brad and Angelina and it's been just as low-key as everyone expected. The mayor of Nice, Christian Estrosi, signed the birth certificate at a press conference; now the discussion has turned to pics of the babies, which are expected to fetch $15 to $20 million. [People, NYDN]

Liv Tyler is getting back together with her husband and turning 31 today. Congrats all around. Also celebrating today: Indie musician Sufjan Stevens is 33. Famed choreographer Twyla Tharp is 67. Supa dupa fly rapper Missy Elliot is turning 37. And former SNL funnyman Dan Aykroyd is 56.

• Is Madonna have a secret romance with Alex Rodriguez? The two have been spending late nights together at her apartment and they've been spotted working out together, too. Rodriguez's wife Cynthia can't be pleased by any of this. [Us]

Welcome back to Defamer Attractions, your guide to the latest surges and scourges among this weekend's new movies. After a fairly predictable go of things last week, we face a pair of high-profile releases that couldn't be further apart in their critical and commercial futures, a nifty and thoroughly unnerving art-house project (hint: wheelchair sex) and a surplus of worthwhile DVD debuts for the shut-ins among us. As always, our opinions are our own and, of course, exceedingly tasteful and accurate. We are always looking out for you!

• Brad Pitt spent the weekend at the Miami Basel fair in Switzerland buying a $293,000 white marble table and $25,000 chairs while a very pregnant Angelina Jolie stayed home in France. [Page Six]

So Liv Tyler just separated from her husband of five years and her Jolie-lipped father Steven Tyler just entered rehab for the 78th time, but in the most highly impressive of ways, the actress managed to avoid both lines of questioning during an interview with gay love lover Jay Leno by sweetly relaying stories of their incredibly “healthy” habits. After getting that boring "Oh My Gawd What Was It Like Having Your Dad Watch You Pole Dance At 16" story out of the way (nailed it, Jay!), Tyler paints a very Norman Rockwell-esque portrait of life at Casa Tyler as a child. Though we fear what the young Liv understood to be fatherly love was, in actuality, acid-tripping fatherly hallucinations involving trippy strings of floss. Watch and learn.

Judging by her appearance on The Late Show Friday night, Liv Tyler isn’t wasting any time moping over her recent separation from husband Royston Langdon. Showing up in a body-hugging little black silk dress, its lace top doing little to cover up cleavage, and pounds of makeup covering her typically bare face, it looks as though Tyler is taking a page from the Gwyneth Paltrow Guide To Hot Rock Moms. But does the trampy look work on Tyler? A closer look after the jump.

After all that hullabaloo following Liv Tyler’s missing wedding ring (and missing date) at Monday’s Costume Institute Gala, the dimpled rocker spawn has officially announced that she and husband of five years Royston Langdon "have confirmed their separation." Whether this means those divorce rumors from weeks ago will materialize or that the pair is just going on one of those godawful “breaks” that never work out (see: Swank/Lowe and Richards/Sheen) is unknown so far. But after we took a look at Liv’s previous paramours, we have a feeling Tyler will have no problem finding a worthy suitor.

Mixing two high-profile sects like A-list stars and fashionistas will inevitably result in a bit of drama, but at Monday night's Costume Institute Gala, drama took on a whole new meaning. Catfights! Divas! Public Displays Of Aggression! From Christina Ricci's early departure to Peacock King's Jeff Zucker's bitchy avoidance of Darth Weinstein on the red carpet, everyone's claws were out on Monday night. Adding fuel to the fire, one married actress decided to show up to the event sans wedding ring amid rumors of a pending divorce. All the details, including Jennifer Aniston's fling-of-the-week's comments on whether or not the whole mushy affair is for real, after the jump.

In between takes of filming a commercial for Nintendo, a woman stopped and asked Liv Tyler, star of the upcoming The Strangers, if she was in fact Michelle Monaghan, star of the recently released Made Of Honor. Tyler explained to the woman that she wasn't related to Monaghan, but the woman insisted that Tyler must be an aunt or a distant cousin of Monaghan. Tyler continued to explain her genealogy by mentioning that her father was the singer for Aerosmith, but the woman shook her head and said, "Fine. Whatever. You're not related to her, but I most certainly know that she's a lot nicer."

Being an actor is just such a tough job. Finding and reading the right scripts, then working on the project for a couple of months. Then there's the long hours and stretches away from your family. But then it's followed a month and half long vacation to Mexico. Whereas the writer, the lucky one, sits hunched over a laptop racking his or her brain to come up with the next great American catchphrase (let's be honest, will anyone ever top "Your eggo is preggo"?) and then coming home with his or her clothes smelling like Starbucks. And if one is lucky enough to sell the script, there are the endless rounds of notes and rewrites and notes on the rewrite and another round of rewrites. Man, it's so tough to be an actor.

The daughter of Aerosmith frontman Steve Tyler, Liv is the foxy model and actress who appeared in Armageddon and The Lord of the Rings.

· Here's comes Spider-Man 3! But how much will it make on its domestic opening weekend, after breaking records in 10 of the 16 territories in which it's already playing? Experts agree: a fucking shitload. [[Variety]
· But! Is THR playing the hype card? We're reminded that the beginning of the summer blockbuster season is always accompanied by the loss of "all sense of perspective." Whatever. This movie's doing $400 million in three days, we can feel it. [THR]
· Reese Witherspoon's Type A Films is developing an adaptation of Rebecca Godfrey's Under the Bridge, the "true-crime account of a brutal high school murder." With no superhero angle to speak of and no prospects of breaking Pirates 2's box office record, why are we wasting time on this? Our theory: Witherspoon is in talks to play Mary Jane in Spidey-4. [Variety]
· Liv Tyler will star opposite Edward Norton in next summer's The Incredible Hulk. Opening weekend prediction: a disappointing $37 million. Hey, no Spider-Man cameo. [THR]
· Thursday night's special, two-hour, spinoff-introducing Grey's Anatomy holds the show's usual viewership, so get ready to enjoy Dr. Addison's romantic misadventures on a weekly basis this Fall. (Did we really hear Tim Daly say, "I'm going to kiss you with tongue?" Maybe they're saving the snappier, "I'm going to place my penis inside you. Then move it around" banter for the actual series.) [Variety]

PrivacyWatch celebrity sightings are submitted by our readers, and are posted several times a week, and the millionth sighting wins a Cavalier—so send them in often! Submit yours to tips[AT]defamer.com (please put "sighting" or "PrivacyWatch" in the subject line) and let everyone know about the time you spotted Debbie Downer finding nothing to complain about at Mozza.