What does a Quaker look like?

Last night, while I was volunteering at a homeless shelter, a guest came up to me and said, “You look like a Quaker!” From my limited experience with and research of Quakers, it seems that most Quakers do not wear distinctive dress—although there are some who wear what’s called “plain dress” (I think). Maybe those of you with more Quaker experience can help me out here. Do you think that she was referring to my clothing, or to my demeanor? I know that you cannot gauge my demeanor from this site, but I can tell you what I was wearing: plain blue cotton long-sleeved t-shirt, denim skirt (below knee), red leggings and black boots. I generally like what I have hear about Quakers, so I just responded with “Thanks for the compliment!”