When you walk into a townhouse and there's a professional pianist casually providing the soiree soundtrack as packs of impeccably well-dressed women saunter their way about the room, you know you're in for a different level of chic. Last evening, Aerin Lauder and Sasha Cutter toasted the launch of Bridgehampton Inn and Restaurant's new 'Look + Cook Book' with owner and author Sybille van Kempen. Held at Sasha Cutter's private home in Gramercy, the garden party affair featured a collection of the city's most stylish who's who.

Click through for an inside look and lesson in summer fete fashion!

[Photos by Conor Harrigan]