Dern beat out fellow candidates Judy Davis (Feud: Bette and Joan), Jackie Hoffman, (Feud: Bette and Joan), Regina King, (American Crime), Michelle Pfeiffer (The Wizard of Lies), and Shailene Woodley (Big Little Lies) for the prize.
Dern beat out her Big Little Lies co-star Shailene Woodley to win, swaying voters for her role as high-powered (and high-strung) CEO Renata Klein. It's her first win in six attempts; she was most recently nominated for her work in HBO's Enlightened, for which she won the Golden Globe Award.
HBO is mulling a second season of Big Little Lies, but no concrete plans are in place.
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