Designer Nicole Miller was feted with a 36-hour birthday bash in Courchevel, France, which a guest described as “the craziest time I’ve spent” at the Alpine ski resort. We’re told festivities started at midnight Tuesday with dinner at La Mangeoire. “Eight magnums were brought out,” said a jet-setting spy, “by servers dressed as pirates and witches.” The bash was hosted by socialite and real estate mogul Janna Bullock. Guests the next day met at Le Cap Horn, where an illusionist made Miller’s wedding ring disappear. (It magically moved to a locked box.) The next night another parade of magnums appeared at L’Aventure, and guests celebrated by shooting off Roman candles meant for VIP bottle service. The revelry wrapped with a daytime party at La Folie Douce, where hundreds danced and Miller was presented with a shirt saying, “[Bleep] the weekend, we party every day!” We hear she put it right on.