Fashion designers and fanatics alike got dolled up and headed to the Metropolitan Museum of Art in NYC last night for the premiere of The September Issue. The high-brow documentary follows Vogue editor-in-chief Anna Wintour as she prepares the year’s biggest issue. Sienna Miller, Cassie, Sean “Diddy” Combs, and Renee Zellweger were among the celebs mingling with fashion’s hottest trend-makers and models. [Photos: Getty Images]
Check out the September Issue HD trailer after the jump.