Christie Brinkley shares how she keeps her three adult children coming home

Christie Brinkley never really had to face an empty nest.

The actress and supermodel stars opposite Steve Guttenberg in "American Summer," a feel-good tribute to simpler times and family connections. The 72-year-old told Fox News Digital that those themes aren't just on-screen — they're values she's embraced in her own life, creating a home her three adult children can still return to.

The movie, which hit theaters Sept. 4, follows Guttenberg's character as he looks back on a formative childhood summer filled with baseball...