I have 13 cm wrist but didn't get mine shorten. For the sweet 6 motif I actually prefer a looser fit since it's all metal and on the dainty side, I like it to have some movement so I just wear it with one motif dangling at roughly 16-16.5 cm. I also wear it as a necklace sometimes but if I ever want to wear it strictly as bracelet, I think at 16 cm would be ideal (not sure how many links for the sweet). But if you like to stack your bracelets, it's best not to make it loose as it can get all tangled up with other bracelets/bangle because of the thin chain and the bracelet itself is so light.