The Millers & The Gettys
Additionally, the von Furstenbergs and Royals of Greece are also related to the Gettys, heirs to J. Paul Getty's oil tycoon billions and the name responsible for things like the Getty Museum in Los Angeles, and Getty Images. The eldest daughter of duty-free entrepreneur Robert Warren Miller, and sister of Alexandra and Marie-Chantal, is Pia, who wed Christopher Ronald Getty back in 1992. They have four children, including yet another cool-girl cousin to Talita and Princess Maria-Olympia, Isabel Getty. Vanity Fair did a whole feature on the second-generation trio.
[Photo via @izzygetty]