These 18-year-olds are also given the freedom make their own business decisions. It's almost a ritual for managers, agents, lawyers and publicists to approach them with the advice that they ditch their parents as advisers, the actress's mother said.
"When they are almost 18, they have secret lunches and they tell your kids 'You need to leave your parents,'" she said. "The parents have no power then." Her own daughter only told her a year later that her manager "took her to lunch and said she needed to get away from mom," she said.
"The agents turned because I was putting pressure on them, because they didn't have a plan for her at 17 and 18," the mother said. "When you make them do their job, then you become the enemy."
Michael Lohan told a similar story about his daughter when she was almost 18 and making the movie "Confessions of a Teenage Drama Queen."
Justin's mom: 'He's just Justin to me'
Justin Bieber's mother Pattie Mallette told CNN's Anderson Cooper in a 2012 interview that she "didn't want him even to know it was an option" to be in the entertainment industry. However, it was his mother who first put his videos on YouTube, which led to his discovery by manager Scooter Braun. She moved with him from Canada to Atlanta where Braun launched Bieber's remarkable career.
"Parenting him is, I think, like anybody parenting a child," Mallette told HLN a year ago. "We just have a different set of circumstances. It doesn't affect me at all. His lifestyle has different circumstances that we have to work around, but he's just Justin to me."
Mallette told USAToday that she's always been protective of her son. "You hear all the horror stories about kids and teenagers in this industry, and I didn't want to throw my son to the wolves. I've done my best to protect him and surround him with good people."
Michelle Obama: 'I'd pull him close'
First lady Michelle Obama, mother of two girls, was asked by Univision Radio host Enrique Santos on Friday what she would do if Justin Bieber was her son.
"I'd pull him close," Obama said. "I don't know if it would be advice as much as action. I would be very present in his life right now and I would be probably with him a good chunk of the time, just there to talk, to figure out what's going on in his head, to figure out who's in his life and who's not."
Her daughters "just want me near, they want that advice from a parent," she said. "They want to see you on a daily basis."
Taite's suggestion for Justin Bieber does not involve his parents. He should have a talk with the Justin Bieber of 15 years from now.
"What he has to do is have a moment of truth and sit down and recognize that his 35-year-old self would be bitch-slapping him right now," the rehab owner said.
Bieber also should find "the best, top notch therapist he humanely, possibly can in the industry, who is desensitized to who he is," Taite said.