03/25/2011 07:31 am ET | Updated May 26, 2011

Ashley Olsen, Olivia Munn & Emmy Rossum: Who Was Thursday Night's Best Dressed? (PHOTOS, POLL)

A handful of models, starlets and designers stepped out for a night at the opera on Thursday night for the premiere of Rossini's "Le Comte Ory," sponsored by Yves Saint Laurent, in N.Y.C.

Naturally, the red carpet was an exercise in black, with Claire Danes, Raquel Zimmermann and Claudia Schiffer leading the way -- but there were those who took a less lugubrious approach, like Emmy Rossum who donned emerald green and Peter Brant, Jr. (model Stephanie Seymour's son, duh) in a dapper pink blazer with a pocket chain.

Take a look -- hint: click on the magnifying glass at the bottom left of each frame for a bigger view -- and tell us who was best-dressed. Probably in YSL.

(Photos by Getty and