When it comes to style, music festival attendees always bring their A-game, making the people watching nearly as interesting as the artists performing on stage (we said nearly). In between sets at this year's Riot Fest in Chicago, we made our way around the grounds to size up the festival wear. Some aesthetics were cool and casual; others eccentric and seemingly impractical. We took note of a lot of trends, from colorful hairstyles to monochrome looks to bold accessories. Here are some of our favorite people, moments, and festival fashion from the weekend.

Fest pros of all ages remember to pack their ear plugs and protection

Platforms: fashionable AND practical

Black was the color this weekend, and we especially loved the polish lent by these leather Jordans.

Testament performing Saturday afternoon.

The Wu-Tang Clan reuinited Saturday night at Riot Fest.

Anthrax proving that basketball jersies remain a festival fashion staple, especially if you customize the name and number.

Plenty of fans checking out the merch at the CBD tent.

Photos by Jeremey Watson for Groupon