The Oscar-winning actress previously worked with creator Mike White on their HBO series Enlightened.
The season 2 premiere ofThe White Lotuson Sunday featured some surprise cameos from creatorMike White’s previous collaborators.
Worry no longer: EW has confirmed that it was indeedLaura Dernwho provided that profanity-filled bit of voice acting.

Laura Dern made a surprise cameo in ‘The White Lotus’ as the voice of Michael Imperioli’s estranged wife.Amy Sussman/Getty Images; Fabio Lovino/HBO
Dern has worked with White before, on their two-seasonHBOdramedyEnlightened.
Molly Shannon made a surprise entrance halfway through season 1, after all.