Mamie Gummer and her actor fiance Ben Walker attended the opening night after party for his play 'Bloody Bloody Jackson' (he stars as Andrew Jackson) in NYC Wednesday night.
Mamie, 27, is the oldest of Meryl Streep's three daughters. She and Ben got engaged a year ago.
HuffPost Entertainment is your one-stop shop for celebrity news, hilarious late-night bits, industry and awards coverage and more — sent right to your inbox six days a week. Learn more