HOUSE WARMING: When Karl Lagerfeld throws a house party, the guest list is as grand as his 18th-century town house and gardens. To fete the launch of Dom Pérignon's Oenothèque and the advertising campaign featuring Claudia Schiffer, lensed by the designer, Lagerfeld welcomed the likes of Jude Law, Paz Vega, Marc Newson, Vanessa Seward, Angela Lindvall, Steve and Christine Schwartzman, Lars Nilsson, Tatiana Santo Domingo, Olivier Theyskens, Pedro Almodóvar, Giambattista Valli and Delphine and Bernard Arnault. "It's like we never stopped working together," said Schiffer of her reunion with Lagerfeld. While the designer and the supermodel, who wore a Dior gown, circled the event, Ralph Fiennes went incognito with Daphne Guinness, and shooed away journalists and photographers. "I'm going back to L.A. to take care of my two-year-old son, Orson," said Vega. Fellow mom-about-town Lindvall, clad in Chanel couture, also said she's heading back to the States to join her two boys. The model-actress is currently working on an angelic part in an upcoming film dubbed "Pearblossom." "I'm a real messenger of God," joked Lindvall, who is also the face of a new Lacoste fragrance. Lou Doillon, who chatted with famed French comedian Michel Blanc, has been taking to the stages of theaters across France and is working on a new movie called "Nina." She is also designing a collection for British denim giant Lee Cooper. "It was great. I really got to participate on the creative process," she said.

TENT-ATION: Days ahead of a shoot planned to run in either Vogue U.S or Vogue Living, Marni creative director Consuelo Castiglioni woke up to a nasty surprise. The hand-woven Berber tent she had bought in Kuwait (it was key to the shoot) was stolen from her property in Formentera, the hip Spanish island. Luckily, though, she managed to round up a replacement tent. A Marni spokeswoman declined to comment.

AMERICAN ROOKIE: TV host Ryan Seacrest was in foreign territory at Elie Saab's couture show Wednesday. Although he has been to Paris several times — this trip was made for a friend's wedding — it was Seacrest's first fashion show. "I'm a fashion show virgin," joked the reality-TV personality. "Now I am seeing firsthand what the celebrities I interview are wearing to the Oscars. So, basically, this is red-carpet research." Seacrest also whispered word of a new project he's working on that will hit TV screens this winter, although he wouldn't say whether or not he'll be its host.