Marc Malkin

Randall Michelson/WireImage.com, George Pimente/WireImage.com, AP Photo/Dan Steinberg, George Pimente/WireImage.com

I'm back home, but the scoop from Sundance just keeps coming. Read on for the latest scoop on Sarah Jessica Parker, Jessica Alba and a pair of celebs caught stripping down at a party!

First up, Mischa Barton is at Sundance promoting Assassination of a High School President—and I hear she’s finding some time to celebrate her 22nd birthday today. I’m told plans are being finalized for a birthday party in just a few hours. It’s looking like it will be Barton and about 25 friends in a private room at the ChefDance dining series. I also hear Sharon Stone and Jimmy Fallon may also be there for a dinner celebrating their movie, The Year of Getting to Know Us.

But back to Barton: She hit the swag suites and picked up Stella McCartney shades from the Solstice Sunglass Boutique at the Hollywood Life House, along with a pair of not yet available oversize Balenciaga sunglasses.

Also at Hollywood Life, Mena Suvari showed things are still going strong with her boyfriend, party promoter Simone Sestito. I saw the lovebirds hanging out there as Suvari got a pair of limited-edition Asics boots. (Only 100 were made, and they were just for Sundance celebs.)

Meanwhile, I got some more deets on Sarah Jessica Parker’s swagging while she was in Park City. The other day I was the first to tell you that Parker, who hit the festival for the flick Smart People, picked up freebie Spyder jackets, Love from Australia boots and Guitar Hero III at Fred Segal at the Lift. Well, I just got word she also walked away with items from the Scarlet Poppy Arte clothing and linen company and a Glam Rock manicure kit.

And how will Jessica Alba shed her pregnancy pounds? While making the rounds at the Kari Feinstein Style Lounge, Ms. Alba was given Reebok fitness equipment, including a treadmill, an elliptical machine and a stationary bike!

Why were Olivia Wilde and Bijou Phillips stripping at Stereo the other night? No, they weren’t getting naked. They were putting on some Scanty thermal sets, because the clothes they were wearing were donated to be auctioned off by Clothes Off Our Back to benefit children’s charities.

Now, whatever happened to the much buzzed about surprise performance by U2 at the Greenhouse after-party for their flick, U2 3D? I’m told they were all set to go—they apparently even had a sound check earlier in the day—but ditched the plans after drummer Larry Mullins Jr. decided not to go to the bash.

U2’s The Edge, however, was around for a few more days. He was spotted on Sunday night at Self magazine and Origins’ launch party for the Harmony Project, a new art group promoting social and environmental causes. The evening included the debut performance of Moby’s new band, the Little Death.

Speaking of music, David Arquette filmed pal Lukas Haas’ performance on Monday night at Teddy’s at the Lift. Earlier that same night, celebs like Jodie Foster, Danny Glover and Andie MacDowell toasted new talent at Variety’s 10 Directors to Watch shindig at the Stein Eriksen Lodge.

Marc Ecko

One shindig I’m definitely miffed I missed was designer Marc Ecko’s Adventures in Wonderland tea party. People in white rabbit costumes greeted guests like Haas, Adrian Grenier, Kim Kardashian and Chamillionaire. The party included displays of Ecko’s artwork, including a mixed-media piece (above) featuring a distraught Humpty Dumpty who appears to be infatuated with Grenier’s most recent reported hookup, Lindsay Lohan.

Jeff Vespa/WireImage.com

Now, take a look at the photo of me to the left. I’m wearing Tundra Gear’s big pink fuzzy Dr. Zhivago-esque hat. As I told you last week, Survivor winner Aras Baskauskas started Tundra Gear. What I didn’t know then is that 10 percent of the company’s profits go to the Cheshire Project, a creative arts program for people with disabilities. And proceeds from the pink number also go to fight breast cancer. Nice!

Well, that's it from Sundance. Maybe. The festival runs until Sunday. You just never know what can happen between now and then.

—Additional reporting by Laura Lane