Actress Melanie Griffith couldn’t hide her excitement when her 24-year-old daughter, Dakota Johnson, was cast last September in the lead steamy role of Anastasia Steele in the film adaptation E.L. James' novel “Fifty Shades of Grey.”

“My beautiful child Dakota has been chosen to play Ana Steele in 50 Shades!!! Look out world! Here she comes!!! #proudmama,” Griffith, who starred in the 1988 romantic comedy film “Working Girl,” posted last year on Twitter.

While Dakota's 56-year-old mother seems thrilled for her, dad -- “Miami Vice” actor Don Johnson -- was more demure. “Let me help you out here," Johnson told HuffPost Live host Ricky Camilleri Thursday during an interview to promote his latest film,  “Cold in July,” due in theaters May 23.  "I haven’t read it. I don’t know anything about it."

The 64-year-old actor predicted that "Fifty Shades" (and any possibly future franchises) won't define his daughter's acting career. “I can tell you this though: Dakota is a gifted, gifted actress and this will be a blip in a long line of parts where she kills it. She is the authentic article and I am exceedingly proud of her.”

"Fifty Shades of Grey" will be released Valentine's Day weekend 2015.

In a Huffington Post interview on Thursday to promote his latest film,  “Cold in July,” Johnson, 64, seemed hesitant to agree that the highly coveted role was a “great opportunity” for his daughter. He also said that he hasn't read the novel.

“Let me help you out here. I haven’t read it. I don’t know anything about it,” Johnson said, going on to predict that his daughter’s role in the film (and possibly future franchise) won't be memorable. “I can tell you this though: Dakota is a gifted, gifted actress and this will be a blip in a long line of parts where she kills it. She is the authentic article and I am exceedingly proud of her.”

Dakota Johnson's Dad Actress Melanie Griffith (L) and actor Don Johnson (R) with their daughter "Fifty Shades of Grey" star Dakota Johnson (2nd L) and Johnson's current wife Kelley Phleger at the 7th Annual In Style Magazine and Warner Bros. Studio Golden Globes after-party in Beverly Hills in 2006. Photo: REUTERS

When asked if not reading “Fifty Shades” was a conscious decision because of its sexually graphic sequences, Johnson said, “This is not something that I would go out and buy and read anyways. This isn’t on my bucket list. I read 'The Story Of O' in the sixties so I think I'm up to speed.” The latter is a reference to an erotic novel published in 1954 by French author Anne Desclos under the pen name Pauline Réage.

In her first official interview for "Fifty Shades" in November, Dakota Johnson told Entertainment Weekly that neither of her famous parents would be welcome on the set of the film, which could get a NC-17 rating.

Fifty Shades of Grey Dakota Johnson as Anastasia Steele and Jamie Dornan as Christian Grey in the film version of "Fifty Shades" Photo: Universal

“I’m obviously not going to invite them take part in this experience,” Johnson said of the movie’s BDSM love scenes. “I don’t need to watch movies of theirs where they do things like this. Why would you want to watch that?”

Universal Pictures unveiled the first “Fifty Shades of Grey” trailer in March at CinemaCon in Las Vegas. The film is being directed by Sam Taylor-Johnson of "Nowhere Boy" fame.