Scarlett Johansson may only have eyes for Ryan Reynolds, but for one night only, the "Other Boleyn Girl" star is prepared to party with a different date.

The humanitarian hottie is taking her philanthropic passions a step further and has put herself up for auction to raise funds for Oxfam America — giving the average American the chance to accompany her to the highly anticipated June premiere of "He's Just Not That Into You." The book-based flick also stars Drew Barrymore, Jennifer Aniston, Justin Long and Ben Affleck.

Click here to make your bid.

But before the winner starts rubbing shoulders with Hollywood royalty, he or she will have to be treated to extensive services before they get their own chauffeured car to whisk them to the premiere to meet up with Scarlett. Sigh. (Well, would you want to be seen with Scarlett without a little "assistance"?)

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Also in the name of charity, you and a guest can get your "Sex and the City" fix by attending the movie premiere and meeting the reportedly single Kristin Davis or hang out with "Bridget Jones" star Colin Firth at the "Mamma Mia" premiere in London.

"If you are the kind of person that always wanted to see middle-aged men in tight spandex trying to sing, then this is the film for you," Firth said.

Kate Hudson a Home Wrecker?

Rumors have been running rampant in recent weeks that Kate Hudson has been romancing the already-taken Justin Timberlake and her former flame Owen Wilson. But who is she really in love with?

"Herself, totally herself," laughed an insider close to the Hudson camp. "Kate is focusing on herself, her son and her career."

But that doesn't mean she would turn away the right man, and that doesn't count out Wilson…

"Kate is a true romantic and, of course, would love to have somebody special in her life," the source added. "But she is definitely not a home wrecker and would never go out pursuing somebody who is clearly in a serious relationship."

Ashlee Simpson Can't Party Without Daddy?

Joe Simpson may be the father and manager of the Simpson sisters, but it seems as though Ashlee can't even hit a party without her protective parent.

Pop Tarts recently spotted the 23-year-old performer at one of Hollywood's biggest affairs (aka the Clive Davis pre-Grammy gig) alongside her boyfriend, Pete Wentz, and, of course, Joe.

But the threesome was back in business over the weekend in Sin City. On Friday they hit up PURE (and drank water only) until the wee hours. We are pleased to say, however, that the young lovers actually got a little time alone together as Tarts spotted Joe having dinner with people his own age at Company American Bistro.

But Ash and her two dates were back together on Saturday night at PURE's sister property, LAX. Simpson sang several of her hit songs (yes, no lip-synching) and her new single, "Outta My Head," for the packed party place. We're told she then got cuddly and cozy with Wentz while sipping champagne at the lounge as her dad sat beside them.

Perhaps Pete is working overtime to butter up big-wig Joe, as Ash has been busted sporting a giant diamond ring. The pop princess told Fuse TV this week that it is a "promise ring" only, meaning all Wentz has to do is ask Mr. Simpson for his daughter's hand in marriage…

Robert Evans' 'Full House' of Former Flames

John Stamos made his way to legendary Hollywood producer Robert Evans' exquisite Beverly Hills home (once owned by Greta Garbo) for a lavish luncheon last week to launch Evans' latest collaboration with vintage eyewear entrepreneur Oliver Peoples; however, that wasn't the only vintage relationship rekindled.

The former "Full House" hottie arrived on the arm of Lori Loughlin (who played his longtime lover on the long-running sitcom and was his real-life girlfriend in the mid-'80s).

Although Loughlin has been married for several years, the former flames looked lovely as old friends moving through the social circles. But we did bust Stamos breaking away to make a closer observation of the bikini-clad, Olympic synchronized swimmers performing in the pool.

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