Who: Rose Byrne

Where: Chanel Fine Jewelry dinner in New York celebrating the 80th anniversary of the 1932 "Bijoux de Diamants" collection.

When: October 9th.

What: A black lace dress from Chanel's Spring/Summer 2011 Haute Couture collection; Ruban Mademoiselle white gold and diamond earrings and ring and a white gold, black and white diamond "Nuits de Diamants" bracelet, all from Chanel Fine Jewelry; Sergio Rossi black suede "uptown" pumps.

Why: Byrne does sheer and graphic brilliantly with a romantically frayed hem and strategically placed lining. Plus, a bow could look prissy on others, but Bryne makes it cool with her messy bouffant updo' and a slash of red lipstick.

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Photo: Will Ragozzino/