Aidan Chambers said this quote

She was--I keep using the past tense; I ought to say she is--one of those people who, at first sight, look plain, are quiet, unassertive, unmemorable even. But who, when they start to talk and you get to know them, become more and more attractive and impressive, and you see that in fact they are beautiful. Not conventionally beautiful, not celebrity beautiful, but beautiful all through.