With DD, mine had faded quite a bit but was still there when I got pg with DS, which was when DD turned 1 year old. I read somewhere that if you're breastfeeding, the hormones tend to make the things that go dark while we are pregnant (the mask of pregnancy, linea nigra) stay longer. I breastfed DD til she was a year old and until I got pg with DS.
Re: linea nigra - when did yours fade?
DITTO