Watch : Dakota Johnson Looks Nearly Unrecognizable in Marilyn Monroe TransformationTurns out Dakota Johnson is Marilyn Monroe’s lost cousin. “Marilyn descends from their daughter Pretitia, while Dakota and [her father] Don Johnson descend from her younger sister, Mary.” In other words, Johnson and Monroe are ninth cousins three times removed, according to a family tree created by the online genealogy platform. As for what inspired the MyHeritage team to dig into a familial link between the two? “Discovering that Dakota Johnson and Marilyn Monroe are related turns the casting into a real-life family story.”