MAGIC MOUNTAIN: Carey Mulligan, Harvey Weinstein, Poppy Delevingne, Mamie Gummer, Teresa Missoni, Jefferson Hack, Lily Kwong and Arizona Muse were among the stylish set who jetted to Switzerland for A Small World’s third annual Winter Weekend in Gstaad, Switzerland. About 220 members of the invitation-only social network from more than 100 countries attended the festivities, which included a reception at the Gstaad Palace hotel, a mountaintop fondue lunch at Wasserngrat and a black-tie fund-raiser on Saturday for the Alzheimer’s Society, at which Mulligan accepted proceeds of $92,500 on its behalf. “It’s just such a horrible thing to happen to anyone and I’ve seen it firsthand,” said the actress, whose grandmother suffers from the disease.

Tali Lennox won a pair of $30,000 Bucherer diamond earrings in a raffle when Waris Ahluwalia pulled her name out of a pot, beating out other attendees like Harley Viera-Newton, Chelsea Leyland and Cassie Coane. Weinstein was previously the majority owner of A Small World, before selling his stake to Patrick Liotard-Vogt, who hosted the weekend with company chief executive officer Sabine Heller.

This story first appeared in the December 18, 2012 issue of WWD.  Subscribe Today.