Those ice sculptures installed at the back of Zac Posen's runway? It's a wonder they didn't melt, what with the star wattage on hand—show regulars Claire Danes and Sean Combs, a co-owner of Posen's company, turned up, as did Ashley Olsen, Bette Midler, Russell Simmons, Jay-Z, and Foxy Brown.

They saw a fall show in which Posen zeroed in on Hollywood's glamour years, turning out bias-cut liquid silk columns in shimmering pastels, and (paging Joan Crawford) bubble-sleeve blouses with hip-loving skirts. He also showed a fair amount of drapey goddess gowns, some embellished with golden coils at the neck and waist. On the more constructed side, an emerald strapless moiré silk dress demonstrated his hourglass fit, while a pleated charmeuse number in slate gray showcased his talent for pattern making.

Posen's alpaca coats seemed oddly informal next to all that flash, and he didn't show much in the way of daywear compared with his efforts for spring. But that's not what his people come for: The leaner and loucher a gown was, the louder the claps from the Combs-helmed cheering section.