Where were you when you got your first period?
That's the question Jessica Biel is asking women in a bid to open up the dialogue around menstruation and encourage us to talk more openly about our bodies.
Now the actor is launching a webseries with the founder of the women's healthcare organisation WomanCare Global, Saundra Pelletier, which aims to educate girls on issues like contraception, periods and sexual health.
Biel is taking the first step, sharing the story of her very first period.
She told Glamour:
I was in a school play, wearing a grey beard and this pad the size of a skateboard and thinking, 'What is happening to me?'
We want girls to know what their [body is going through] so they don't feel scared or ashamed or gross.
I'll go next...
I started my period when I was in year 10. I was in a popular fast food chain with my dad and my brother. I was wearing white jeans (it was 2003, okay!).
I went to the bathroom, and freaked out. I had no idea what to do. I fashioned a makeshift liner out of some loo roll, tied my jumper round my waist and pretended nothing had happened.
When I got home I cried. I don't think I wanted to be a grown up.