who starred in this movie?
Armie Hammer and Chalamet
Call Me by Your Name (film)
Guadagnino was impressed by Armie Hammer's performance in "The Social Network" (2010), describing him as a "sophisticated actor, with a great range". 
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Call Me by Your Name (film) [SEP] Casting
His character, 17-year-old Elio, is fluent in three languages: English, French and Italian. Upon his arrival in Italy, Chalamet—who already spoke French fluently and had played piano and guitar for years—prepared for his role with a schedule of daily lessons in Italian, gym workouts three times a week, and by working with composer Roberto Solci.