Dressed to Thrill: Rachel McAdams in Louis Vuitton & Azzaro

Get ready for a Dressed to Thrill twofer! Woody Allen fans already know that the legendary Manhattan filmmaker's latest movie, Midnight in Paris, opens today. And on Tuesday night, the flick's leading lady attended a Cinema Society screening of the romantic comedy in a Louis Vuitton gown that was spot-on Old Hollywood glam. With its subtle ivory leopard print and thigh-high slit, the frock was a perfect mix of sexiness and elegance—and McAdams' pinup-worthy blonde curls finished off the retro-refined look.

Later that evening, at the Soho Grand Hotel, the star made the afterparty rounds in a black silk jumpsuit from Azzaro's fall collection. We love the neat little bowtie and glimmering buttons—not to mention those killer pointy-toed Louboutins! It almost seems as though McAdams chose dueling feminine and masculine looks as a nod to her new film's boy-meets-girl storyline, no?

Which of the two ensembles did you prefer?