"I tried Botox in the forehead. I'm not a fan. I won't ever do that again," Brinkley admitted. "I didn't like the claustrophobic feeling of not being able to do whatever I want with my eyebrows."
Brinkley went on to emphasize that needles can't replace good old-fashioned clean eating and living.
"How you eat and how you exercise, these all play a tremendous role in how you feel, and therefore, how you look," Brinkley said. "And a smile will give your face an instant lift and it also releases endorphins."
Lately it's Brinkley's boyfriend John Mellencamp who's been keeping a smile on her face.
"We're having a good time," Brinkley said of their budding relationship. "It's fun!"
Having gone through four divorces -- most recently a bitter 2008 split from architect Peter Cook -- Brinkley hasn’t revealed too much about her dating life, but in an appearance on Howard Stern's SiriusXM show, she admitted that musicians are her type. She was married to singer Billy Joel from 1985 to 1994, and have one daughter together, 29-year-old Alexa Ray Joel.
"I think that artists are the most amazing people because they're constantly creating beauty for the world," she explained. "With all the crazy stuff in the world, there's artists reminding us of our humanity and reminding us of our heart and soul -- what really matters. So I respect artists so much. I absolutely love music as the ultimate art."