Ethan Hawke and Laura Dern Are ... Cousins?!

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Hawke recently startled Dern with the news that the two are related

This story first appeared in the Sept. 26 issue of The Hollywood Reporter magazine.

The fall festival circuit has turned into a family affair for Ethan Hawke and Laura Dern.

While at Telluride, where Hawke debuted his first documentary, Seymour: An Introduction, and Dern supported Wild, the 43-year-old actor startled the 47-year-old actress with the news that the two are related.

Hawke told Dern the link traces back to her mother's side, actress Diane Ladd, which makes sense as Ladd and Tennessee Williams are cousins, while Hawke is known to be the great-grandnephew of the playwright.

Dern and Hawke are said to be planning an NYC meet-up this year to dig deeper into their family tree.