'Becoming Chaz': Cher Admires Son Chaz Bono's Courage At Film Premiere

Cher is more supportive than ever to her son, Chaz, who legally changed his gender and name last year.

The iconic singer held a small screening of the upcoming documentary Becoming Chaz at her Malibu home over the weekend. "Cher and 10 of her and Chaz's friends stood up and cheered when it was over," a friend of Cher's tells PEOPLE.