Already bored with your summer wardrobe? Then allow us to introduce you to the summer scarf. We promise this workhorse accessory will become your new best friend. Throwing on a colorful, patterned scarf can take your t-shirt and jeans look from simple to stunning in just one step, and right now we’re crazy about this Tolani tie dye scarf (pictured above). Maybe we’ve just perused one too many Bonnaroo-themed Facebook albums, but we think this scarf is seriously cute and perfect for summer. In case tie dye isn’t your thing, though, we’ve rounded up our favorite under-$100 lightweight scarves that are sure to heat up your summer wardrobe. Check out the slideshow after the jump!