Dark shades.  Leather jacket.  Smug expression.  Ashton Kutcher, u r 1 kewl dude.  We spotted The Kutch outside of The Late Show with David Letterman last night who was there to talk about his new movie What Happens in Vegas.  The romantic farce co-starring Cameron Diaz about what happens when two people get drunk and then get a quickie wedding in Sin City opens this Friday.

   

Cameron Diaz hit the red carpet looking radiant last night, marking her return to Hollywood since the tragic loss of her father two weeks ago.  Cameron was at the Village Theater in Westwood to premiere her new movie What Happens in Vegas with co-star Ashton Kutcher.  Also on hand for the event were Lake Bell, Diablo Cody, Eva Longoria, Soleil Moon Frye (Punky!) and Bai Ling, cuz what's a red carpet with out that ding bat?

       

Cuz an SNL party don't stop!  Saturday Night Live cast members and famous friends all made their way down to Hill Country Barbecue Market in Manhattan to celebrate taping their show with host Ashton Kutcher.  SNLers Andy Samberg, Bill Hader, Seth Meyers and producer Lorne Michaels were all on hand as well Demi Moore, Diddy, Lucy Liu, Rumer Willis, Gossip Girls Blake Lively and Michelle Trachtenberg, Jonah Hill and even the latest "fallen" Idol, Michael Johns.  Yeah, no way your Saturday was that fun!

           

I know in reality, smoking is gross, however Ashton Kutcher looks kinda hot with a cigarette hanging out of his mouth here on set.  Ashton is currently filming the movie Spread in Los Angeles.  It looks like Ashton is back to his dirty habit after vowing to kick it over a year ago; maybe he should borrow some Ariva from Lindsay. 

We caught up with Ashton Kutcher on the set of his new film Spread, and I'm still dying to know what this is going to be about.  In the earlier shots we got of Ashton's character, he was looking super 80s, and now he's looking very too cool for school!  The nonchalant pose, jumping in and out of VW convertibles, he's so rad!  Even though he's in character, I can see why Demi is seduced by his boyish charm. 

Has Ashton Kutcher joined a new wave band?  There's something flamboyantly retro about his outfit...he looks like he needs a synthesizer in front of him.  Well the real truth is, we snapped these shots of Ashton on the set his new film Spread, which is shooting in Los Angeles. Ashton plays a serial womanizer in the movie-which I believe is set in present day, so I don't get the outfit...maybe he's also a serial Kajagoogoo fan.

ATTENTION: If you are a celebrity/common person with good connex who went to Socialista Bar on the dates of February 7th, 8th or 11th you may have been exposed to Hepatitis A! GROSS.

Ashton Kutcher celebrated his 30th birthday in style last night. Ashton and Demi first dined at the Bowery Hotel in NYC and then moved onto club Socialista, with their A-list guests following behind.  Selma Hayek and her fiance Francois-Henri Pinault showed up as well Eric Dane and his wife Rebecca Gayheart.  Single gals (for the evening) Lucy Liu, Madonna and Gwyneth Paltrow also attended.  Bruce Willis and Emma Hemming even showed up baring gifts!  Not a bad way to say goodbye to your youth!

The celebs came out last night for perhaps the fanciest event of New York Fashion Week, A Night To Benefit Raising Malawi and Unicef, held at the United Nations Plaza.  The event, hosted by Madonna and Gucci really had the stars bringing their A-game.  It was a family affair as both a HUGELY pregnant J.Lo and a discreetly pregnant Gwen walked the red carpet.  Madonna brought her daughter Lourdes as her date.  Katie and Tom didn't have Suri with them, which maybe accounts for why Katie looks like a deer caught in he

...but why so tired? We spotted Ashton grabbing some lunch with friends at the midtown NYC restaurant Serafina.  But maybe he has something more exciting planned for later today to celebrate hitting the big 3-0. Perhaps Demi will treat him to a rejuvenating day spa treatment.  Looks like he could sure do with it.