My name is Eva and I was born in the late 1990's:) I am the only Eva in my whole school and honestly love my name! I was named after my grandmother Eva which has always made my name special to me. Sometimes people get my name confused with Ava for some reason but to tell you the truth it doesn't really bother me. I think the trendiness of my name skipped my generation. Also I have never in my entire life had anyone call me Evie. The only nickname that I remember is I got called E sometimes when I was little. Hope this helps:)
I want to love Eva I really do but for some reason I can't. I think it may be the whole Eva Longoria association. I think I prefer Ava to Eva. With that being said, I don't think it's trendy at all. It's a very classic name that will age very well. I also don't think you'll have to worry about the nn Evie. Eva is such a short name already, there is no need to shorten it even more. Maybe she will acquire a nn that doesn't have anything to do with her name. Good luck.