There's only a few, rare occasions when vintage won't do. Bike helmets are one of those (experts tell me that the plastics in the padding break down over time). Pardon a little AVH soapbox, but, after a lot of very painful and expensive surgeries, I'm very committed to pairing cute bikes with equally cute helmets. Here's a few of my favorite, stylish ones.
No longer for sale, but I like the idea of adding some vintage silk flowers your helmet.