New Yorkers closed out the week in style at events all around the city last night. From an A-list birthday bash for Aby Rosen at the Paramount Hotel to a chicrooftop celebration for the Perrin Paris 1893 NYC launch, there was no shortage of fashionable ladies to choose from for today's best dressed guests roundup. Click through to see the amazing looks from Thursday night for yourself.

The Guest List

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Nicky Hilton• Lauren Santo Domingo• Chelsea Leyland• Best Dressed Guests• Chloe Malle• Hannah Bronfman• Jacquelyn Jablonski• Julia Loomis• Anastasia Ganias• Chloe Perrin• Perrin Paris 1893 New York Launch Event• Aby Rosen Hosts a Birthday Bash at the Newly Launched Paramount Hotel• The Hero Fund Scholarship Fundraiser Founded By Hunter Hill in Honor of Perry Moore• Li Ming• Cleo Schroeder• Chrissy Rutherford• Colby Gabel