Street fairs are a common sight throughout the summer and the fall in New York City. Typically several blocks, you will see a wide array of vendors selling street meat, jewelry, orchids, smoothies, crepes, and $5 pashminas. There's even a website dedicated to keeping you informed about what street fair is where and when!
Honestly, I usually steer clear of street fairs - I have a way of unintentionally coming across them (much like parades) while I'm trying to get somewhere and they do get crowded. I also get the same vibe from many of them. Today, I stumbled upon a street fair on Lexington Ave and the fair was less crowded than the sidewalk so I took a stroll through it. Good decision! In the midst of gyros and cell phone chargers, I found a cosmetic vendor!
This vendor (appropriately named "Street Fair Cosmetics") had a large tent of makeup - mostly old various drug store brands, but I did see Lancôme Juicy Tubes. They had a very decent selection of polishes including several Essies, Hard Candy (Beetle and Sky), 2012 crackles, $1 Maybellines, and Jordana.