Nicholas Nixon’s series “The Brown Sisters” is quite possibly the greatest #TBT project in contemporary art. For this video, in conjunction with MoMA’s 2014 exhibition commemorating the 40th anniversary of the series, photographer Nicholas Nixon speaks with MoMA curator Sarah Meister about “The Brown Sisters,” an ongoing series of annual portraits of his wife, Bebe, and her three sisters, Mimi, Laurie, and Heather, and his recent foray into digital work.