Body confidence? What the hell is that?
I spent my childhood being told by my loving (honestly) mum that it was a pity I'd inherited my legs/hair/facial structure/teeth from my dad and not from her (to her everlasting sorrow I did not conform to the Shirley Temple ideal of small girlhood).

I spent the same childhood being assured by my dad that I was clever/intelligent/funny/good company. My mum ensured that by the time I was 17 I knew how to make the best of myself, physically, and my dad helped give me confidence in myself and my abilities that never left me.
What does it matter what you look like naked? When I got married I weighed just under 7 stones. I had a decent bosom and no bum. Well, have a look for yourself.
