Statement necklaces are very IN this season. I love them because it can totally dress up a very casual outfit. You could simply wear a baggy T-shirt and add a statement necklace to it, and you instantly look FABULOUS!
I just bought a BEAUTIFUL yellow statement necklace on eBay. And I am IN LOVE!!! It's mustard yellow, canary yellow and turquoise. I can't tell you how many compliments I received when I wore it!

I also bought a gorgeous green vintage necklace on eBay a few days ago. I'll post pics of it very soon. You will love it too! I love eBay! It's such a great resource to find fashionable items for much less.