I was 13. I started with just wearing eyeliner because all my friends were. And then I slowly started adding a little more to my routine and experimenting with it. And now I'm 19 and i wear all makeup. All the time. I love it! :)
Thirteen I'd guess, lots and lots of black eyeliner and mascara. I very rarely wear it now and if I do it's incredibly natural - no foundation or bronzer, just a little brown mascara and some natural eyeshadow - no eyeliner. The reason I wore it was because I was a bit of a goth when I was younger, and what self respecting goth doesn't wear way too much eyeliner and purple eyeshadow?