Zoe Bleu Sidel
Definitely the most eccentric Hollywood heiress on our list, Zoe Bleu Sidel is the daughter of Rosanna Arquette and restaurateur John Sidel, and, like her many family members before her, she's pursuing a career in acting. But the 2012 deb is not your typical starlet. Just take a look at her 'gram, which is full of mysterious and artistic images. Also, she's dating Thomas Cohen, widow of the late Peaches Geldof.
[Photo via Getty]