Happiness is key to looking beautiful, says Julia Roberts

Washington: Julia Roberts believes that being happy and content in your life is the key to looking good because it improves everything about you.

The `Pretty Woman` actress says that self-confidence is also vital to make you beautiful.

"I honestly think the key to anyone looking beautiful is being happy in their life. That`s really the biggest part of what anybody looks like because, whether you mean to or not, you wear your life on your face and in your posture and in your attitude. So that is the number one key to coming across as a beautiful individual," Contactmusic quoted her as telling Britain’s Hello! Magazine.

The 44 year-old actress who has three kids with her husband Danny Moder is also on a gluten free diet.

My girlfriend advised trying a gluten-free diet as an experiment. She said, "If I go through your pantry and replace everything that you have with a gluten-free version, will you just try it?" And I said yes.

“Now I feel good - I`m getting there!” she added.