Last night in NYC, Gwyneth Paltrow, Kate Hudson, Jessica Biel, Sarah Jessica Parker and Michelle Williams looked stunning in Tiffany & Co. Blue Book Collection jewelry at the annual Blue Book Ball, Ivanka Trump and Lauren Remington Platt got down at the 2013 Museum Dance sponsored by Roberto Cavalli, Justin Long, Olivia Wilde, Penn Badgley dined at Urban Zen Loft, Zac Efron stepped out with Heather Graham for the premiere of their new film "At Any Price," and more!