Though the documentary is based on Gaga's life, the singer revealed that she would be seeing it for the first time at Friday's premiere.
"No, [I'm not nervous to watch it]," she told ET. "I'm excited."
"I wanted to share a bit of myself that I hadn't shared yet with the fans, but I didn't want to do it on my own," she told reporters at the event. "I don't think that I can be objective about myself."
"My biggest fear was that it would be a commercial, or it would lack in authenticity and it would feel as though I was pandering to people to love me, so I gave Chris full access, once I decided I trusted him," she said. "There are wonderful, amazing men in my life, and Chris is no exception."