I gave an edge to this simple H&M tee with a number of necklaces. The circle necklace is from Topshop. It had a number of additions to the pendant but I removed them and made this statement necklace. I then layered it with a simple fine curb chain that I bought from Paris whilst on holiday and then a simple chain from H&M.
You can team any necklaces together and the layering effect always works.