Inexpensive accessories are a great way to get more mileage out of your wardrobe. H&M, Aldo accessories, Fred Flare, and Girlprops NYC all offer inexpensive versions of runway trends and loads of variety. Another options is to get a little creative with what you've already got: thin necklace chains can look great layered around the wrist as bracelets, long scarves can be knotted and tied into interesting necklaces. Check out bead stores for DIY options, or get really crafty and glue some pretty feathers onto a headband for a dash of whimsy.
