I did a quick trawl of the photos that I have on my laptop and tried to pick four per year ie 1973, 1983, 1993, 2003 and 2013. There has been a bit of artistic licence, but here I am - I think my smile has stayed the same!
Baby and toddler Helen
Gawky family girl Helen
Happy student Helen
Living in London and loving it Helen
Happy Mum, wife and zurich career woman Helen