Braving igloolike conditions at the Grand Palais, guests at the Yves Saint Laurent show Monday night shared cold-weather survival tips. “I wear Uniqlo underwear when I can,” said Catherine Deneuve. “I live in thermal underwear,” chimed in fellow YSL muse Loulou de la Falaise. Long johns, however, are certainly not Kylie Minogue’s thing. The shivering songstress was relying on her YSL coat to keep her warm. “Brrr, I may regret not wearing the thermals later,” Minogue said, adding she was just wrapping up her new album, due out in June. “Can you design a radiator?” begged stylist Charlotte Stockdale to her industrial designer hubby Marc Newson, who sported a Tsumori Chisato scarf knotted tightly around his neck. “I think it’s a chick’s scarf, but I like it,” Newson said. French actress Amira Casar had more unusual remedies up her sleeve. “Tons of goose fat,” she laughed. Missing in action, meanwhile, was Kate Moss, who was rumored to have missed her train.