Chris and Lisa - Maker Faire, San Mateo, CA
Chris: "History and fashion."
Lisa: "We're part of the Greater Bay Area Costumer's Guild - dot org."
They just made the hats at the Maker Faire, I don't think it was part of their outfits when they left their house. This is reaffirmed by the fact that Lisa couldn't keep the hat from falling off. I stopped them because I like Lisa's vintage 1940s dress and how they (perhaps unconsciously) match (green and black).
I also really like Lisa's t-strap Mary Jane pumps.