I prefer Alysia over Amelia, but I would probably spell it with a double 's' (Alyssia). I think the similar name Alyssa is lovely and know a girl with this name, and it's shortened to Liss, Lissa and Lissy. I also know an Amelia but have never heard anybody shorten her name, though I have heard some people shorten Amelia to Millie xxxxxx