Owen Wilson

Leonardo DiCaprio stepped out for the Brant Foundation Art Study Center's Andy Warhol showing on Sunday in Greenwich, CT. The event, which featured several of the artist's greats hits such as "Flowers" and "The Last Supper," was also attended by Owen Wilson, Stephanie Seymour, and Sharon and Aimee Osbourne. While Leo made a quick entrance into the center, he has been a red carpet fixture over the previous weeks for Great Gatsby promotions. His much-anticipated film was released Friday but could not quite top the box office over the weekend, coming in No. 2 to still-reigning Iron Man 3.

Leonardo, though, has already switched gears and is utilizing the art world for his more charitable endeavors. The actor and his environmental foundation joined forces with Christie's for a charity auction in NYC today to benefit environmental causes. The event is called The 11th Hour Auction, and Leonardo's foundation hopes to raise over $18 million for causes such as wildlife and endangered-species protection. Thirty-three pieces from top artists including Banksy, Andreas Gursky, Bharti Kher, and others will be at the bidding stake, while Leonardo himself donated his "Ocean V" by Andreas to the auction.

Owen Wilson wandered through a Malibu farmers market with his son, Robert, yesterday. Owen's back in California after popping up in Atlanta last month for work. He filmed The Internship with Vince Vaughn and both guys brought their kids to the set. Little Robert and Vince's young daughter, Locklyn, hung out behind the scenes when their parents weren't busy in front of the cameras. Owen has since moved on to his next project, voicing Reggie in the animated comedy Turkeys. He also has a birthday coming up, too, and will turn 44 on Nov. 18.

Owen Wilson and Vince Vaughn had special visitors on the set of their new movie, The Internship, yesterday in Atlanta. Owen was spotted carrying his 1-year-old son, Robert Ford, and cuddling him between takes. Meanwhile, Vince's wife, Kyla Weber, brought their young daughter, Locklyn, along to visit, too. During a break from shooting, Owen looked on while the toddlers held hands and tested out their relatively new walking skills.

Owen and Vince spent the day shooting at a mattress store with Will Ferrell, who also has a role in the movie. Owen and Robert Ford's mother, Jade Duell, split last year. Despite the split, they've been seen taking their son on outings to the park and the beach together since ending their romantic relationship.

The Hollywood Reporter hosted a party at LA's Getty House, the residence of Mayor Antonio Villaraigosa, to honor the year's crop of Academy Award nominees last night. The publication's editorial director, Janice Min, presided over a bash that brought out Midnight in Paris stars Owen Wilson and Michael Sheen, though Michael's real-life leading lady, their costar Rachel McAdams, sat things out. Jessica Chastain, who wore Vivienne Westwood, is in the running for a best supporting actress statue for her work in The Help, and she made the rounds with best pal Jessica Weixler. Brooklyn Decker also stepped out to say hello to producers and writers from movies like The Descendants, The Artist, and Moneyball. THR's bash was one of many that went down in Hollywood last night in the run-up to Sunday's Oscars. Don't forget, we'll be LIVE on the Academy Awards red carpet starting at starting at 5:30 p.m. EST/2:30 p.m. PST.

The green room backstage at last night's SAG Awards offered some of the presenters a rare moment to take a load off! Kyra Sedgwick and husband Kevin Bacon shared a sweet moment on a couch, then welcomed Michelle Williams over for a hug. Michelle's BFF Busy Philipps was in charge of holding their clutches when Michelle kicked off the show and presented the oustanding male actor in a supporting role to Beginners star Christopher Plummer. Busy also took a moment to say hello to actress Regina King. Owen Wilson hung out there as well, along with a Givenchy haute couture-clad Zoe Saldana and Natalie Portman in Giambattista Valli. The SAG Awards winners were taken from the backstage area over to the press room, while those who announced the awards went out into the audience to reclaim their seats. However, there is still one category that's undecided — who do you think was best dressed at the SAG Awards?

Owen Wilson was a doting dad yesterday at a Santa Monica park with his young son Robert Ford Wilson. His ex, Jade Duell, also kept an eye on their little one as he tackled the jungle gym and slide. Owen preserved memories of the happy afternoon by snapping photos on his iPad. Owen and Jade welcomed Robert earlier this year in January. Since then, Owen's visited the mother-son duo multiple times at her Hawaiian home.

Owen's jet-setting hasn't stopped there. Last week, he was in St. Barts on a vacation with friends. Owen was seen hanging out at the island's chic Bagatelle, enjoying attention from women on the dance floor. It seems like a perfect time for Owen to celebrate since he recently nabbed a Golden Globe nomination for his role in Midnight in Paris. Make sure to fill out our Golden Globes ballot with your winner picks for a chance to win $1,000!

Winter officially starts today, and we're getting an early jump on the chilliest season with our favorite snowy photos! From Sundance to NYC, and movie sets around the globe, even stars love to play in the snow. Click through to see how celebrities ring in cold weather with sledding, skiing, snowball fights, and more.