I was originally told that I should get a 17, my wrist circumference is approx. 5 3/4". And I did get the 17 and then returned it. It just rode too high up on my arm and (at nite especially) I would find myself constantly tugging it down. I now have a 16 and though I really do not like any jewelry fitting snug, with this particular bracelet I'd rather have it tighter than looser. The point to my story is that you REALLY should get the size you like and not what someone advises you to - you're wearing it, not them. Good luck!