She's preached it ever since her trip to rehab: it's what inside that counts. It's the real you that matters.
And now Demi Lovato has put that philosophy into practice, posting a photo on Twitter of herself makeup-free, a rarity for celebrities. (Lady Gaga went a similar route late last month). Take a look for yourself:
"I'm not always perfectly happy with my body," Lovato said in a recent interview with WE7. "After all, I'm a woman and what woman is? But I make sure I tell myself that I'm beautiful and I tell myself daily affirmations, so I would recommend that to younger girls - and guys."
What do you think of Demi's all natural look? Weigh in now and don't forget to watch her official music video for "Give Your Heart a Break."