I've heard some say (I know it sounds like phrenology or something) that INFPs tend to have baby-faces, and wide-eyed expressions. There was even a chart of average faces by MBTI type and the INFP type looked less sort of adult than say ESTJ lol. ESTJ women were portrayed as somewhat masculine looking, but I don't take that that seriously though...I'm wondering if it is possible that there is correlation between 'neoteny' or 'neotenous' (childlike) characteristics and personality type? Do INFPs tend to LOOK young for their age, and also have childlike personalities? Like daydreaming and having an imagination, or lack of order or being organised is sometimes seen as an INFP trait. Or lack of ability to concentrate. Interesting to ponder.