What's a good nickname for Francesca?

All my life i've been called frankie, I hate it. So at my last school I made everyone call me by my real name which is francesca, they reckoned it was to long so people start coming up with there own nicknames for me such as; fran, franchy, francesco, frannie, frankie, frances. I don't have any thing against the name frankie, its just i'm 14 and gunna be a freshman and I want a bit more of a femmenie and mature name.