"I am a very proud mom," Griffith, 57, said, though she noted that she hasn't seen her daughter's film yet.
Things got a bit awkward as they talked about the BDSM movie co-starring Jamie Dornan -- with Griffith saying she doesn't need to see the erotic movie because she knows her daughter is a good actress.
The 25-year-old Johnson, whose father is former "Miami Vice" star Don Johnson, wore an red Saint Laurent gown with a high slit.
This wasn't the first time Johnson and her mom walked the red carpet together. They also attended the 2000 show: