Khloé Kardashian Odom: "I Wish I Was a Little Tinier"

Why the reality star sometimes envies her sister Kourtney's smaller bod. Plus, who paid $16,000 to visit the set of Matt Damon's next flick?

There's absolutely nothing wrong with Khloé Kardashian Odom's curvaceous bod.

But that doesn't mean sometimes she gets a little envious of her sister Kourtney's petite frame...

Mrs. Lamar Odom says she'd love to rock some of her older sis's signature styles.

"I wish I was a little tinier so I could wear [rompers]," Khloé told us at the Kardashian by Bebe Holiday and Resort Clothing Collection preview in L.A. "I love them, they're just not really my body type...I'm a little too tall to be wearing a thing that short."

While promoting their fashion line, Kourtney also admitted to wanting a little body modification. Her New Year's resolution? "Exercise," Kourt says. "Maybe I should start trying to work out."

In other celeb sightings news, Jennifer Garner stopped by the Voice for the Animals pet adoption center in L.A.'s Pacific Palisades neighborhood with daughters Violet and Seraphina, where the fam played with rescued kittens and puppies but left without adopting any new animals.

Do-gooders Eric Stonestreet and Maura Tierney were on hand at LAX airport to help Stand Up to Cancer and Virgin America celebrate the launch of their partnership, which allows passengers to donate money for cancer research while in-flight.

A few blocks away, Jake T. Austin celebrated his 16th birthday alongside Wizards of Waverly Place costar Selena Gomez and Jaden Smith at an Onitsuka Tiger-hosted bash at the Hollywood Roosevelt Hotel.

Just last night, Marcel Vigneron of Top Chef All-Stars provided the eats at the Dockers preview party in West Hollywood. A few blocks away, Cindy Crawford's hunky hubby Rande Gerber was among the very pretty crowd celebrating Richard Phibbs' new book, Chasing Beauty, at the RRL boutique.

Over in NYC, hip-hop mogul Russell Simmons got in on some auction action, bidding—gulp!—$16,000 during Charlize Theron's Africa Outreach charity event for a chance to visit the set of Matt Damon's next film.

Also in the Big Apple, Sam Rockwell, Juliette Lewis, Philip Seymour Hoffman and Erika Christensen got their game on at LAByrinth Theater Company's Celebrity Charades 2010: Fight Night benefit event at St. Paul of the Apostle Church.

Across the pond, Emma Roberts and Chloe Moretz were among the 600 guests who hit the über-chic opening of fashion house Miu Miu's flagship store at London's posh shopping spot Bond Street.