It happened in the blink of an eye. Amanda Seyfried—who played iconic ditz Karen Smith in Mean Girls, made out with Megan Fox in Jennifer’s Body, and played cub to Julianne Moore’s cougar in Chloe—is now a MILF.

Seyfried, who turns 40 in December, is ushering in her MILF stage in a big way, starring opposite stunner Sydney Sweeney in The Housemaid, a psychological thriller from director Paul Feig (A Simple Favor) and Lionsgate, premiering December 19.

Sweeney, who turns 28 today, plays the titular housemaid, hired by Seyfried to serve her and her affluent husband. Secrets are soon exposed, and Sweeney and Seyfried must have nude, lesbian sex to make things good again—or so we hope.

Peep some pics:

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