The 42-year-old American Idol judge was named People's Most Beautiful Person for 2011. She said that she realises that it's her job to look good in front of the camera, but when she is in the comfort of her own home, she likes to kick-back and relax.
She told the magazine, 'The thing is, it's part of my job. I don't want anybody thinking it's easy. It does take time and it's hard work. HDTV wide-screen is nobody's friend.
'[Being natural] is when I'm my happiest. Just being able to touch my face and rub my eyes and put my fingers in my hair and not having to worry about messing it up. It's so much better.'