We go thru SL looking at our own backs for the most part. I'm not sure I could pick my face out of a crowd with out looking at the name. In fact I changed my hair once and couldn't find myself in a crowd till I moved.
I've been fairly plain looking till just recently. I had the default skin or some freebie skin I picked up. Same with eyes and shape. Default was good enough.
This summer tho I suddenly got the shopping bug and bought a new skin and eyes and hair. I love prim hair - so does everyone in SL I think. Here's a pic of me in my new skin sitting in the house I built. I bought a pink dress too - me in a pink anything is pretty funny if you knew me in real life.