Leonardo DiCaprio, Robert F. Kennedy Jr. at Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.
Mark Ruffalo at Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.
Andy Cohen attends Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.
Jeff Koons attends Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.
Leonardo DiCaprio, Robert F. Kennedy Jr., Ralph Lauren at Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.
Jessica Joffe attends Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.
Lauren Bush Lauren and David Lauren attend Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Andrew Toth/Getty Images.
Chuck Close at Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.
Leonardo DiCaprio, Robert De Niro, Robert F. Kennedy Jr., Ralph Lauren at Riverkeeper's 50th Anniversary Fishermen's Ball at Pier Sixty at Chelsea Piers on May 18, 2016 in New York City. Photo by Getty Images.