The Hollywood trope that turns women into children

"Born Sexy Yesterday" is a trope in TV and film where a "fish out of water" plot is used to frame an adult woman as an inexperienced child. Think "Leeloo Dallas Multipass."

It's a science fiction convention in which the mind of a naive, yet highly skilled, girl is written into the body of a mature sexualized woman. Born Sexy Yesterday is about an unbalanced relationship, but it’s also very much connected to masculinity. The subtext of the trope is rooted in a deep seated male insecurity around experienced women and sexuality.

See also: "The Five Lies Hollywood Tells Itself."