Last Night's Parties: Sienna Miller And Dree Hemingway Head Out East For HIFF, Lena Dunham Helps Close Out New Yorker Festival, And More!

Where: Andaz Fifth Avenue Who was there: Lena Dunham, Sarah Silverman, Malcolm Gladwell, Christian Louboutin, Gay Salese, Lana Wachowski Other details: After a three day weekend consisting of panels and intimate conversations with Lena Dunham, Fred Armisen, Christian Louboutin, John Slattery and Dustin Hoffman among others the festival wrapped up the weekend with a party Sunday night at Andaz 5th Avenue. - - - - - - - [Lena Dunham] [Malcolm Gladwell, Christian Louboutin] [Sarah Silverman, Andy Borowitz] [photos via]