Nickname advice

Brandi
We recently found out we are expecting a girl and we want her name to be Carmen Evelyne but I'm am curious as to what a nickname could be. Any ideas? I thought about the Nickname Cece. It's not really a big deal I just don't want people being lazy and saying Car lol I was called Bran (Brandi) as a kid like I was a cereal ? now most people just call me Bee which is fine.