Jessica Biel

My grandmother, whom we call Biel, thinks it's very unbecoming of me not to smile for the paparazzi. So every time I see them, I think, 'Smile for Biel!'

I've never gotten to do romantic comedy like most of the girls. Maybe because I'm fit, people assume that I'm not funny?

I feel my knees changing - like, why do I have this pain when I'm running on the treadmill? What's going on with my lower back when I wake up in the morning? I just feel changes. And I'm definitely fearful in a very vain manner about my body ageing.

I had my bad-boy moment in my teens. I'll never do that again. It wasn't pleasant, and I learned my lesson. It was sexy and mysterious, and it's like, 'Look how cool they are,' but it's just not worth it. He was lying to me and accusing me of cheating - but then I realized he was the one cheating.

My Barbies were usually naked. Once, I took their heads off, cut their hair, drew on their short, spiky hair with some markers, then stuck the heads on Christmas lights. Every year, we'd string our tree with those Barbie heads. It looked demonic. My parents were so cool - they saw it as a form of self-expression.

In the car on my way to premieres and awards shows, I'll sit with tissue paper under my armpits so I don't soil the delicate dress fabric. The whole time, I'm telling myself, 'Please don't sweat, please don't sweat.' I throw the tissues out right before I step out of the car, and nobody ever knows! I just put on a smile and fake it.