Larger clasp

Question

I was given a Gucci 1500 gold ladies watch. I have a tiny wrist and the watch "just" fit. I can wear it most of the time, however, sometimes it can become uncomfortable because it's a bit too tight.I was told that I can buy a larger clasp or something that will give me a little extra room for this watch.I have looked online but cannot find anything.Please help. I love this watch and would love wearing it day in and out without any distress.