A documentary on Bono 's experience , `` Becoming Chaz '' , was screened at the 2011 Sundance Film Festival and later made its television debut on OWN : Oprah Winfrey Network .
A documentary on Bono 's experience , `` Becoming Chaz '' , was at the 2011 Sundance Film Festival . It was later on the OWN : Oprah Winfrey Network .