Khloé & Kourtney Throw Themselves a Book Release Bash! Plus: More star sightings!

ByPeople StaffPublished on November 21, 2011 05:55AM EST Credit : Jason LaVeris/FilmMagic Kourtney and Khloé Kardashian hosted a Gilt City-sponsored bash at a private apartment in N.Y.C. in

honor of their debut novel, Dollhouse. The sisters smiled and snapped pictures with fans, who enjoyed a Central Park view and macaroons from Vendôme, as well as cocktails. “They were smiling

and laughing with everyone,” an onlooker says of the two. – Jennifer Garcia and Jessica Wedemeyer