The movie won 10 Academy Awards, including Best Picture in 1961.
Rita Moreno and Russ Tamblyn will be among the stars greeting moviegoers at several screenings this weekend.
You can meet them Saturday at the Hollywood Palms in Naperville. The movie will be shown at 4, 6 and 8 p.m.
And, on Sunday, the stars will be at the Hollywood Boulevard Cinema in Woodridge. Screening times are 3, 4:30 and 6 p.m.