LINDSAY'S ETHICAL SWAP: Lindsay Lohan may be known for her revolving wardrobe of brand new designer duds, but after appearing in ad campaigns for labels from Miu Miu to Jill Stuart, the party-loving actress has now turned her attention to ethical fashion. Visa Swap — a pop-up shop where customers can swap their cast-off clothing items for others', which the credit card company will set up in London's Covent Garden in June — has signed the actress to be the face of the project. Lohan has been shot in a collection of vintage clothing to promote the shop, and the images will be released in June. The idea behind the project is that customers can donate clothing they no longer wear to the Covent Garden shop over a period of three weeks beginning June 21, and then have the value of their clothing — in points — put onto a Visa card. During the weekend of July 19, customers can then exchange the value of the points on their cards for others' second-hand items. Visa will donate any left over items to TRAID, a British organization that raises money to support communities in developing countries by recycling clothing through its network of stores. The Covent Garden Visa Swap follows the launch of the company's Swap store on London's Brompton Road last year.

HOPPING ALONG: On Tuesday afternoon, Donna Karan hosted a private lunch and viewing for Parisian jeweler Lorenz Bäumer at Karan's collection outpost on Madison Avenue. Heather Mnuchin, Jessica Seinfeld, Sloane Barnett, Nathalie Kaplan, Shafi Roepers, Marjorie Gubelmann and Ulla Parker sat at tables adorned with centerpieces that featured Bäumer's baubles atop bunches of freshly imported green bananas (so fresh, in fact, that a frog popped out of one centerpiece just before the lunch began). "Pass them down," directed Caryn Zucker, referring to the gems that the ladies were eagerly trying on for size. Barnett wore Bäumer pieces from her own collection, including a large cocktail ring — equipped with a compartment behind the stone. "It's for your Valium or your Ecstasy," the San Francisco-based socialite joked.

COLD STARE: After partying in New York last week, Jade Jagger feted her "Jagger Dagger" for Belvedere vodka at Chateau Marmont in Hollywood on Tuesday, culling a group of party pal siblings including Ione Skye and Donovan Leitch, Tatiana and Alexandre von Furstenberg, Paris and Nicky Hilton, Michelle Hicks and Sienna Guillory. "Our men are off making a movie in England, so Sienna is staying with me in Los Angeles," said Hicks, who arrived tardy, explaining, "We're on English time." Jagger, who designed the bejeweled dagger that dancers used to chip away at ice during a routine, said, "The dagger's a very English symbol, very authoritarian. I've got lots."