United Kingdom, Jan. 9 -- Amanda Seyfried felt "so liberated" while making The Housemaid.

The 40-year-old actress starred alongside Sydney Sweeney in the hit mystery-thriller film, and Amanda admits that she relished the experience of playing an unhinged housewife in the movie.

The blonde beauty told W Magazine: "I star opposite Sydney Sweeney, and we have the same shoe size, are the same height, and we giggle the same way.

"It was so crazy-in some ways, that film is like Black Swan or Single White Female, but funny. I got to play so hard.

"The director, Paul Feig, would give me the strangest directions. He'd say, 'Okay, make [Sydney] think you're going to kiss her!' I felt so liberated."

Amanda previously heaped praised on Sydney, d...